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Add ImageColumn at the end of a RadGrid

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Grid

This is a migrated thread and some comments may be shown as answers.

Marcel asked on 17 Apr 2012, 06:25 PM

Hi everyone,
i want to add an ImageColumn at the end of a RadGrid which is using a DataTable as DataSource.

DataTable dtTable = objTest.ReturnsDataTable();

RadGrid2.DataSource = dtTable;

RadGrid2.DataBind();

GridImageColumn gridImageCol = new GridImageColumn();

gridImageCol.ImageUrl = "/images/stift_icon.gif";

GridImageButton gridButton = new GridImageButton(gridImageCol);

gridButton.OnClientClick = "testAlert";

RadGrid2.DataBind();

RadGrid2.Columns.Add(gridImageCol);

//RadGrid2.Rebind();

RadGrid2.DataBind();

Because of the Source (i guess) i need to call the Binding-Metod, so that the row can be added (at the end).
If i just now add the Column without calling DataBind() or Rebind() again, the ImageColumn will not be shown. And by using those methods, the ImageColumn is the first Column.

Is there a way to solve this?
Is it maybe possible to switch the position of the columns? (I could use this in another case).

Thanks in advance,
Marcel

4 Answers, 1 is accepted

answered on 18 Apr 2012, 09:48 AM

Hello Shinu,
thank you for your response. The SwapColumn-method will sure be helfpful for some of my other concerns but i still have the problem of adding the the ImageColumn to the Gridview. Here is the Code i use:

DefaultCS.aspx.cs:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Telerik.Web.UI;

using System.Data;

using System.IO;

using System.Data.Odbc;

namespace TelerikNestedGrid

{

public partial class DefaultCS : System.Web.UI.Page

{

private void DefineGridStructure()

{

RadGrid RadGrid1 = new RadGrid();

RadGrid1.ID = "RadGrid1";

//Assignt the DataTable as Source

RadGrid1.DataSource = GetTableFromCSV(@"D:\RadGridImport.csv"); ;

//If only Bind the Data here, the ImageColumn will not appear.

RadGrid1.DataBind();

//Create and Add the new Column

GridImageColumn col = new GridImageColumn();

col.ImageUrl= "/images/stift_icon.gif";

GridImageButton btn = new GridImageButton(col);

RadGrid1.Columns.Add(col);

//If i first Bind and then Rebind() here, the ImageColumn is at the Beginning.

//RadGrid1.Rebind();

this.PlaceHolder1.Controls.Add(RadGrid1);

}

protected void Page_Init(object source, System.EventArgs e)

{

DefineGridStructure();

}

protected void Page_Load(object sender, EventArgs e)

{

}

private DataTable GetTableFromCSV(string path)

{

if (!File.Exists(path))

throw new FileNotFoundException();

FileInfo fileInfo = new FileInfo(path);

DataTable dataTable = new DataTable();

string connectionString = String.Format("Driver={{Microsoft Text Driver (*.txt; *.csv)}};Dbq={0};", fileInfo.DirectoryName);

OdbcConnection connection = new OdbcConnection(connectionString);

OdbcDataAdapter da = new OdbcDataAdapter(String.Format("select * from [{0}]", fileInfo.Name), connection);

da.Fill(dataTable);

return dataTable;

}

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DefaultCS.aspx.cs" Inherits="TelerikNestedGrid.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/tr/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">

</head>

<body class="BODY">

<form runat="server" id="mainForm" method="post">

<telerik:RadScriptManager ID="RadScriptManager1" runat="server" />

<br />

<div style="width: 730px;">

<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

</telerik:RadAjaxManager>

<br />

</div>

</form>

</body>

</html>