Use the ASP DataGrid DropDownColumn to create a single selection drop-down list control in each cell of DataGrid column. You can control the appearance of the ASP DataGrid DropDownColumn by setting the BackColor, ForeColor, BorderColor, BorderStyle, and other properties. The control displays in a datagrid cell a single value that is selected from a collection by clicking the button of the control. Your user can enter text in the control if the string typed in matched an item in the collection to be accepted.

The ASP DataGrid DropDownColumn supports data binding. To bind the control to a data source, create a data source, such as a System.Collections.ArrayList object, that contains the items to display in the column. Then, use the DataSource property to bind the data source to the ASP DataGrid DropDownColumn. You can use a System.Data.DataTable or System.Data.DataRowView or System.Collections.ArrayList object as a datasource for your DropDownColumn. For this kind of a datasource you need to specify ValueMember and DisplayMember properties.

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid DropDown Column into bound datasource.

Syntax
<RustemSoft:DropDownColumn DataField="Data Field Name" HeaderText="Header Text"/>

The ASP DataGrid DropDown Column class has the following useful properties:

DataSource - a source for a DataGrid DropDown column values list as System.Data.DataTable or System.Data.DataRowView or System.Collections.ArrayList

DisplayMember - field to display in a column cell as String (name of a DataTable column)

ValueMember - field with values, which binds to drop-down control as String (name of table column). Specify the contents of the ValueMember property in cases where you bind data.

VB .NET
' Define DropDown variable as an object of DropDownColumn class
' and assign it to the DataGrid1 'State' column.
Dim DropDown As DropDownColumn = DataGrid1.Columns(5)
' Assign DataSource property for DropDown object as tblStates
' data table where states’s names are stored.
DropDown.DataSource = tblStates
' Specify DisplayMember as "Name" field of tblStates table
DropDown.DisplayMember = "Name"
' Specify ValueMember as "State" field of tblStates table
DropDown.ValueMember = "State"
' Identify "State" column's foreground color
DropDown.ForeColor = Color.DarkMagenta
' Identify "State" column characters' font and size
DropDown.Font_Name = "Tahoma"
DropDown.Font_Size = FontUnit.Point(8)
' Adjust 'State' column's width
DropDown.Width = Unit.Point(60)

C#
// Define DropDown variable as an object of DropDownColumn class
// and assign it to the DataGrid1 'State' column.
DropDownColumn DropDown = (DropDownColumn)DataGrid1.Columns[5];
// Assign DataSource property for DropDown object as tblStates
// data table where states’s names are stored.
DropDown.DataSource = tblStates;
// Specify DisplayMember as "Name" field of tblStates table
DropDown.DisplayMember = "Name";
// Specify ValueMember as "State" field of tblStates table
DropDown.ValueMember = "State";
// Identify "State" column's foreground color
DropDown.ForeColor = Color.DarkMagenta;
// Identify "State" column characters' font and size
DropDown.Font_Name = "Tahoma";
DropDown.Font_Size = FontUnit.Point(8);
// Adjust 'State' column's width
DropDown.Width = Unit.Point(60);

The DatePicker Column is used to allow the user to select a date, and to display that date in your ASP .NET DataGrid interface.

By clicking the DatePicker Column's button you will get a separated browser Page that displays a stylized calendar. Clicking on your chosen date in Calendar Page the date value will be returned into currently selected DataGrid cell in a Date format that you have defined previously.

Also the DatePicker Column can be used to allow the user to insert formatted date, and to display that date in your DataGrid without using the pop-up Calendar Form. The DatePicker column provides the entered date validation.

The ASP DataGrid DatePicker Column class has the following useful properties:

Format - Various formats may be set. You may use a date format (the class explicitly supports the date in the following formats: MMDDYY, MMDDYYYY, DDMMYY, DDMMYYYY, YYYYMMDD) to enable the date inserting and updating. Default is MMDDYYYY.

DelimiterChar - a separator between date fractions (between days and month or month and year). Default is "/".

yearGreaterThanPresentYear - integer. For the DatePicker column's cell interface two-digit year is assumed to be in the 20th century. So if you enter a date of 12/31/96, the application stores the value of 12/31/1996. You can manipulate the year behavior by using the DatePicker column's yearGreaterThanPresentYear property. If the inserted year is greater than yearGreaterThanPresentYear year value (default is 30) from now (from current date year) the control will use "19" as first two digits for year, otherwise will use "20".

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid DatePicker Column into bound datasource.

Syntax
<RustemSoft:DatePickerColumn DataField="Data Field Name" HeaderText="Header Text"/>

VB .NET
' Define DatePicker variable as an object of DatePickerColumn class
' and assign it to the DataGrid1 'Date' column.
Dim DatePicker As DatePickerColumn = DataGrid1.Columns(5)
' Identify "Date" column's foreground color
DatePicker.ForeColor = Color.DarkMagenta
' Identify "Date" column characters' font and size
DatePicker.Font_Name = "Tahoma"
DatePicker.Font_Size = FontUnit.Point(8)
' Adjust 'Date' column's width
DatePicker.Width = Unit.Point(60)
' Define yearGreaterThanPresentYear property. If the inserted year is greater
' than current year plus 20 the control will use "19" as first two digits for year,
' otherwise will use "20"
DatePicker.yearGreaterThanPresentYear = 20

C#
// Define DatePicker variable as an object of DatePickerColumn class
// and assign it to the DataGrid1 'Date' column.
DatePickerColumn DatePicker = (DatePickerColumn)DataGrid1.Columns[5];
// Identify "Date" column's foreground color
DatePicker.ForeColor = Color.DarkMagenta;
// Identify "Date" column characters' font and size
DatePicker.Font_Name = "Tahoma";
DatePicker.Font_Size = FontUnit.Point(8);
// Adjust 'Date' column's width
DatePicker.Width = Unit.Point(60);
// Define yearGreaterThanPresentYear property. If the inserted year is greater
// than current year plus 20 the control will use "19" as first two digits for year,
// otherwise will use "20"
DatePicker.yearGreaterThanPresentYear = 20

How to define date format and delimiter char?
VB .NET
' Define Date Format as DD.MM.YYYY
DatePicker.Format = DatePicker.DateFormats.DDMMYYYY
' Define separator char
DatePicker.DelimiterChar = "."

C#
// Define Date Format as DD.MM.YYYY
DatePicker.Format = DatePicker.DateFormats.DDMMYYYY;
// Define separator char
DatePicker.DelimiterChar = ".";

How to turn off error messages? How to define error messages in my native language?
VB .NET
' You may turn error messages off
DatePicker.ErrMessageVisible = False
' You can specify an error message in your native language:
DatePicker.ErrMessage = "Date Inadmissible ! R?introduisez svp."

C#
// You may turn error messages off
DatePicker.ErrMessageVisible = false;
// You can specify an error message in your native language:
DatePicker.ErrMessage = "Date Inadmissible ! R?introduisez svp.";

VB .NET
' Define CheckBox variable as an object of CheckBox Column class
' and assign it to the DataGrid1 'YesNo' column.
Dim CheckBox As CheckBox Column = DataGrid1.Columns(5)

C#
// Define CheckBox variable as an object of CheckBox Column class
// and assign it to the DataGrid1 'YesNo' column.
CheckBox Column CheckBox = (CheckBox Column)DataGrid1.Columns[5];

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid DateTime Column into bound datasource.

Syntax
<RustemSoft:DateTimeColumn DataField="Data Field Name" HeaderText="Header Text"/>

VB .NET
' Define DateTime variable as an object of DateTimeColumn class
' and assign it to the DataGrid1 'Time' column.
Dim DateTime As DateTimeColumn = DataGrid1.Columns(5)
' Define Time Format
DateTime.Format = DateTime.DateTimeFormats.HHMMSS12
' Define separator char
DateTime.DelimiterChar = ":"

C#
// Define DateTime variable as an object of DateTimeColumn class
// and assign it to the DataGrid1 'Time' column.
DateTime ColumnDateTime = (DateTimeColumn)DataGrid1.Columns[5];
// Define Time Format
DateTime.Format = DateTime.DateTimeFormats.HHMMSS12;
// Define separator char
DateTime.DelimiterChar = ":";

How to turn off error messages? How to define error messages in my native language?
VB .NET
' You may turn error messages off
DateTime.ErrMessageVisible = False
' You can specify an error message in your native language:
DateTime.ErrMessage = "Date Inadmissible ! R?introduisez svp."

C#
// You may turn error messages off
DateTime.ErrMessageVisible = false;
// You can specify an error message in your native language:
DateTime.ErrMessage = "Date Inadmissible ! R?introduisez svp.";

The ASP DataGrid Numeric Column class has the following useful properties:

IntegerOnly - as Boolean. Default is False.

PositiveOnly - as Boolean. Default is False.

DefaultValue - any numeric value. Default is empty numeric (null/Nothing).

MinValue - any floating-point value range minimum of the inserted value. Default is empty numeric (null/Nothing).

MaxValue - any floating-point value range maximum of the inserted value. Default is empty numeric (null/Nothing).

MaxLength - as integer, specifies a fixed length of whole input area. Default is empty numeric (null/Nothing).

DecimalLength - as integer, specifies a fixed decimal length. Default is empty numeric (null/Nothing).

DelimiterChar - decimal separator. Default is ".".

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid Numeric Column into bound datasource.

Syntax
<RustemSoft:NumericColumn DataField="Data Field Name" HeaderText="Header Text"/>

VB .NET
' Define Percent variable as an object of NumericColumn class
' and assign it to the DataGrid1 'Percent' column.
Dim Percent As NumericColumn = DataGrid1.Columns(5)
' Identify 'Percent' column's foreground color
Percent.ForeColor = Color.DarkMagenta
' Identify 'Percent' column characters' font and size
Percent.Font_Name = "Tahoma"
Percent.Font_Size = FontUnit.Point(8)
' Adjust 'Percent' column's width
Percent.Width = Unit.Point(60)
' Define that Percent column accepts positive values only
Percent.PositiveOnly = True
' Define Percent column’s max length
Percent.MaxLength = 8
' Define Percent column’s Decimal Length
Percent.DecimalLength = 2
' Define Percent column’s max possible value
Percent.MaxValue = 10000
' Define Percent column’s min possible value
Percent.MinValue = 100
' Define Percent column’s error message for max value
Percent.ErrMessageMaxValue = "Too much!"

C#
// Define Percent variable as an object of NumericColumn class
// and assign it to the DataGrid1 'Percent' column.
NumericColumn Percent = (NumericColumn)DataGrid1.Columns[5];
// Identify 'Percent' column's foreground color
Percent.ForeColor = Color.DarkMagenta;
// Identify 'Percent' column characters' font and size
Percent.Font_Name = "Tahoma";
Percent.Font_Size = FontUnit.Point(8);
// Adjust 'Percent' column's width
Percent.Width = Unit.Point(60);
// Define that Percent column accepts positive values only
Percent.PositiveOnly = true;
// Define Percent column’s max length
Percent.MaxLength = 8;
// Define Percent column’s Decimal Length
Percent.DecimalLength = 2;
// Define Percent column’s max possible value
Percent.MaxValue = 10000;
// Define Percent column’s min possible value
Percent.MinValue = 100;
// Define Percent column’s error message for max value
Percent.ErrMessageMaxValue = "Too much!";

How to turn off error messages? How to define error messages in my native language?
VB .NET
' You may turn error messages off
Percent.ErrMessageVisible = False
' You can specify an error message in your native language:
Percent.ErrMessage = "Date Inadmissible ! R?introduisez svp."

C#
// You may turn error messages off
Percent.ErrMessageVisible = false;
// You can specify an error message in your native language:
Percent.ErrMessage = "Date Inadmissible ! R?introduisez svp.";

To identify each text fraction you must set values of two-dimensional array where properties of the fractions are stored. The first array's element specifies what characters can be inserted into the fraction. It accepts the following values:
N - numeric characters (0-9) are acceptable only
L - letters (Aa-Zz) are acceptable only
A - alphanumeric characters (Aa-Zz0-9) are acceptable only
Empty - any characters are acceptable
The second array's element specifies overall fraction's length.

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid Text Fractions Column into bound datasource.

Syntax
<RustemSoft:TextFractionsColumn DataField="Data Field Name" HeaderText="Header Text"/>

VB .NET
' Define PhoneColumn variable as an object of TextFractionsColumn class
' and assign it to the DataGrid1 'Phone' column.
Dim PhoneColumn As TextFractionsColumn = DataGrid1.Columns(5)
' Identify 'Phone' column's foreground color
PhoneColumn.ForeColor = Color.DarkMagenta
' Identify 'Phone' column characters' font and size
PhoneColumn.Font_Name = "Tahoma"
PhoneColumn.Font_Size = FontUnit.Point(8)
' Adjust 'Phone' column's width
PhoneColumn.Width = Unit.Point(60)
' Specify Delimiter Character for the field as space
PhoneColumn.DelimiterChar = " "

' Specify first fraction properties
' Alphanumeric symbols only are acceptable for the fraction
PhoneColumn.FractionsCode(0, 0) = "a"
' You can insert 3 symbols only into the first fraction
PhoneColumn.FractionsCode(0, 1) = 3

' Specify second fraction properties
' Numeric symbols only are acceptable for the fraction
PhoneColumn.FractionsCode(1, 0) = "n"
' You can insert 3 symbols only into the second fraction
PhoneColumn.FractionsCode(1, 1) = 3

' Specify third fraction properties
' Numeric symbols only are acceptable for the fraction
PhoneColumn.FractionsCode(2, 0) = "n"
' You can insert 4 symbols only into the third fraction
PhoneColumn.FractionsCode(2, 1) = 4

' Define PhoneColumn column’s error message for max value
PhoneColumn.ErrMessageMaxValue = "Not correct phone #!"

C#
// Define PhoneColumn variable as an object of TextFractionsColumn class
// and assign it to the DataGrid1 'Phone' column.
TextFractionsColumn PhoneColumn = (TextFractionsColumn)DataGrid1.Columns[5];
// Identify 'Phone' column's foreground color
PhoneColumn.ForeColor = Color.DarkMagenta;
// Identify 'Phone' column characters' font and size
PhoneColumn.Font_Name = "Tahoma";
PhoneColumn.Font_Size = FontUnit.Point(8);
// Adjust 'Phone' column's width
PhoneColumn.Width = Unit.Point(60);
// Specify Delimiter Character for the field as space
PhoneColumn.DelimiterChar = " ";

// Specify first fraction properties
// Alphanumeric symbols only are acceptable for the fraction
PhoneColumn.FractionsCode[0, 0) = "a";
// You can insert 3 symbols only into the first fraction
PhoneColumn.FractionsCode[0, 1] = 3;

// Specify second fraction properties
// Numeric symbols only are acceptable for the fraction
PhoneColumn.FractionsCode[1, 0] = "n";
// You can insert 3 symbols only into the second fraction
PhoneColumn.FractionsCode[1, 1] = 3;

// Specify third fraction properties
// Numeric symbols only are acceptable for the fraction
PhoneColumn.FractionsCode[2, 0] = "n";
// You can insert 4 symbols only into the third fraction
PhoneColumn.FractionsCode[2, 1] = 4;

// Define PhoneColumn column’s error message for max value
PhoneColumn.ErrMessageMaxValue = "Not correct phone #!";

How to turn off error messages? How to define error messages in my native language?
VB .NET
' You may turn error messages off
PhoneColumn.ErrMessageVisible = False
' You can specify an error message in your native language:
PhoneColumn.ErrMessage = "Date Inadmissible ! R?introduisez svp."

C#
// You may turn error messages off
PhoneColumn.ErrMessageVisible = false;
// You can specify an error message in your native language:
PhoneColumn.ErrMessage = "Date Inadmissible ! R?introduisez svp.";

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid Text Edit Column into bound datasource.

Syntax
<RustemSoft:TextEditColumn DataField="Data Field Name" HeaderText="Header Text"/>

VB .NET
' Define CommentColumn variable as an object of TextEditColumn class
' and assign it to the DataGrid1 'Comment' column.
Dim CommentColumn As TextEditColumn = DataGrid1.Columns(5)
' Identify 'Comment' column's foreground color
CommentColumn.ForeColor = Color.DarkMagenta
' Identify 'Comment' column characters' font and size
CommentColumn.Font_Name = "Tahoma"
CommentColumn.Font_Size = FontUnit.Point(8)
' Adjust 'Comment' column's width
CommentColumn.Width = Unit.Point(60)
' Define Name of Interface Page that will be called by clicking on TextEdit button
CommentColumn.InterfacePageName = "TextEditPage.aspx"
' Define width of Interface Page
CommentColumn.InterfacePageWidth = 280
' Define height of Interface Page
CommentColumn.InterfacePageHeight = 260
' Define if the Interface Page is scrollable
CommentColumn.InterfacePageScroll = True

C#
// Define CommentColumn variable as an object of TextEditColumn class
// and assign it to the DataGrid1 'Comment' column.
TextEditColumn CommentColumn = (TextEditColumn)DataGrid1.Columns[5];
// Identify 'Comment' column's foreground color
CommentColumn.ForeColor = Color.DarkMagenta;
// Identify 'Comment' column characters' font and size
CommentColumn.Font_Name = "Tahoma";
CommentColumn.Font_Size = FontUnit.Point(8);
// Adjust 'Comment' column's width
CommentColumn.Width = Unit.Point(60);
// Define Name of Interface Page that will be called by clicking on TextEdit button
CommentColumn.InterfacePageName = "TextEditPage.aspx";
// Define width of Interface Page
CommentColumn.InterfacePageWidth = 280;
// Define height of Interface Page
CommentColumn.InterfacePageHeight = 260;
// Define if the Interface Page is scrollable
CommentColumn.InterfacePageScroll = true;

The RustemSoft ASP DataGrid UpDown Column represents a datagrid column up-down control that displays a list's selected values. It allows you to show a UpDown control in a Datagrid cell. The control displays in a datagrid cell a single value that is selected from a collection by clicking the up or down buttons of the control. The user can also enter text in the control if the string typed in matched an item in the collection to be accepted.
To create a collection of objects to display in the UpDown control, you can add or remove the items individually by using the Add and Remove methods.
You can identify a DataSource parameter for the control. The DataSource is a source for DataGrid UpDown column values list as System.Data.DataTable or System.Data.DataRowView or System.Collections.ArrayList. By defining DisplayMember parameter you can specify a field to display in UpDown column as String (name of table column).
Use the ASP DataGrid UpDownColumn to create a single selection up-down list control in each cell of ASP .NET DataGrid column. You can control the appearance of the ASP DataGrid UpDownColumn by setting the BackColor, ForeColor, BorderColor, BorderStyle, and other properties.
The ASP DataGrid UpDownColumn supports data binding. To bind the control to a data source, create a data source, such as a System.Collections.ArrayList object, that contains the items to display in the column. Then, use the DataSource property to bind the data source to the ASP DataGrid UpDownColumn. You can use a DataTable object as a datasource for your UpDownColumn. For this kind of a datasource you need to specify ValueMember and DisplayMember properties.

By implementing in your code an interface with the DataGridCommands class you will be able to save all updates into DataGrid's datasource data object. By using UpdateDataSource method of the class you can easily save all updates that your user made in ASP DataGrid UpDown Column into bound datasource.

Syntax
<RustemSoft:UpDownColumn DataField="Data Field Name" HeaderText="Header Text"/>

The ASP DataGrid UpDown Column class has the following useful properties:

DataSource - a source for a DataGrid UpDown column values list as System.Data.DataTable or System.Data.DataRowView or System.Collections.ArrayList

DisplayMember - field to display in a column cell as String (name of a DataTable column)

ValueMember - field with values, which binds to up-down control as String (name of table column). Specify the contents of the ValueMember property in cases where you bind data.

VB .NET
' Define StateColumn variable as an object of UpDownColumn class
' and assign it to the DataGrid1 'State' column.
Dim StateColumn As UpDownColumn = DataGrid1.Columns(3)
Dim al As ArrayList = New ArrayList
SQL = "SELECT * FROM States"
DA = New System.Data.OleDb.OleDbDataAdapter(SQL, conStr)
Dim tblStates As DataTable = New DataTable
DA.Fill(tblStates)
Dim row As DataRow
' Populate tblStates table's records into al ArrayList
For Each row In tblStates.Rows
al.Add(row("State"))
Next
StateColumn.DataSource = al
' Identify “State” column’s background color
StateColumn.BackColor = Color.LightGray
' Identify “State” column characters’ font and size
StateColumn.Font_Name = "Tahoma"
StateColumn.Font_Size = FontUnit.Point(8)
' Adjust ‘State’ column’s width
StateColumn.Width = Unit.Point(30)

C#
// Define StateColumn variable as an object of UpDownColumn class
// and assign it to the DataGrid1 'State' column.
UpDownColumn StateColumn = (UpDownColumn)DataGrid1.Columns[3];
ArrayList al = new ArrayList();
SQL = "SELECT * FROM States";
DA = new System.Data.OleDb.OleDbDataAdapter(SQL, conStr);
DataTable tblStates = new DataTable();
DA.Fill(tblStates);
// Populate tblStates table's records into al ArrayList
foreach (DataRow row in tblStates.Rows)
{
al.Add(row["State"]);
}
StateColumn.DataSource = al;
// Identify “State” column’s background color
StateColumn.BackColor = Color.LightGray;
// Identify “State” column characters’ font and size
StateColumn.Font_Name = "Tahoma";
StateColumn.Font_Size = FontUnit.Point(8);
// Adjust ‘State’ column’s width
StateColumn.Width = Unit.Point(30);

To deploy a sample web application to a web server, you have to create a Web Setup project in MS VS .NET Environment, build it, copy it to the Web server computer, and run the installer to install the application on the server using the settings defined in your Web Setup project. However it does not work for every particular server. For our users' convenience we have prepared an instruction that describes how to easily deploy the ASP DataGridColumns assembly samples to your web server computer. Please follow the steps:

Download ASPDataGridColumnsTrial.zip file

Open MS .NET Development Environment and create a new Web project

Place the downloaded zip file into the new project's directory. For example, you created project in https://localhost/WebApplication1. On your server hard-drive it suppose to be C:\Inetpub\wwwroot\WebApplication1 directory. Unzip the ASPDataGridColumnsTrial.zip into that directory

In your new created project's Solution Explorer select Project from the menu bar

Choose 'Add Existing Item' from the drop down menu

Browse to and choose Cars.aspx (You need to add .aspx file!)

And then browse to and choose ComboInterfacePage.aspx

And then browse to and choose DatePickerObject.aspx

And then browse to and choose TextEditPage.aspx

Set Cars.aspx as Start Page for your project. Just right-click on name of the Cars.aspx in Solution Explorer and choose "Set as Start Page"

You have to have administrator access to your web server. Open windows explorer and navigate to the new project's folder where Samples.mdb Access database is unziped. Right-click and open the properties page, click the security tab, and grant the IUSR_computername user account Modify permissions to the folder and the Samples.mdb file

Add Reference to ASPDataGridColumnsTrial.dll (see below)

Run the project

See more detailed explanation how to setup the ASP assembly sample

Suppose you are building a project using Visual Studio.NET, and you decide that you want to start consuming RustemSoft ASP DataGridColumns .NET assembly for an ASP .NET DataGrid control on your .aspx Page. The first step that you will generally take is, you will add a reference to the ASP DataGridColumns .NET assembly, which is residing in some directory on your server. Visual Studio .NET will then add a new item under Solution Explorer called 'References', and it will create a row node underneath it called ASP DataGridColumns.
In order to add the reference to ASP DataGridColumns .NET assembly please follow the steps:

Select Project from the menu bar
Choose Add Reference from the drop down menu
Click on the Browse button
Browse to and choose ASPDataGridColumnsTrial.dll

The second step, your need to import the RustemSoft namespace by adding the line:
<%@ Register TagPrefix="RustemSoft" Namespace="RustemSoft" Assembly="ASPDataGridColumnsTrial" %>
to the top of your ASP.NET Web page.

The Reference to the .NET RustemSoft namespace is a requirement and must be added to a project before the objects in the RustemSoft namespace can be used. The VB .NET Imports statement (or C# using statement) is not a requirement and is simply a coding convenience that allows shorter names to be used. You can add the statement to your code (code behind your aspx):

VB .NET
Imports Rustemsoft LLC

C#
using RustemSoft;

Download the ASP DataGridColumns .NET assembly code samples for VB.NET and C# that show how you can use the RustemSoft ASP DataGrid Columns in ASP .NET DataGrid control.