addressing a GridView column

User 2942716

Hi, This is my first question posted here so please go easy on me :) I've been searching around and trying all sorts of things to solve this problem but still no luck... after I bind the data to the wanted GridView, I can not address a specific column that I want to set to visible = false. I keep getting this error: "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index". Debugging shows that Grid has data and it is not empty, so I do not see a reason for this to happen. here is an example code and the stack trace:

private void GetUpdated()
{
    DataSet ds = new DataSet();
    DataTable dt = new DataTable();
    dt = myData.RetrieveData("db\_GetCaseLastUpdate").Tables\[0\];
    dt.Columns.Remove("IncidentId");
    dt.Columns\[1\].ColumnName = "Last Modified";
    grid\_Update.DataSource = dt;
    grid\_Update.DataBind();
    grid\_Update.Columns\[0\].Visible = false;  <-- sorce error
}

Stack Trace: [ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index] System.Collections.ArrayList.get_Item(Int32 index) +2880797 System.Web.UI.StateManagedCollection.System.Collections.IList.get_Item(Int32 index) +9 System.Web.UI.WebControls.DataControlFieldCollection.get_Item(Int32 index) +5 _Default.GetUpdated() in c:\Documents and Settings\customerservices\My Documents\Visual Studio 2005\WebSites\AjaxControlToolkitWebSite1\Default.aspx.cs:81 _Default.Page_Load(Object sender, EventArgs e) in c:\Documents and Settings\customerservices\My Documents\Visual Studio 2005\WebSites\AjaxControlToolkitWebSite1\Default.aspx.cs:26 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +47 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436 Also, I can't seem to find a way to change a column's width. I hope this is the right forum for this question... TIA for your help!!!

Sam M

follow the below: 1.

for (int index = 0; index < this.grid_Update.Columns.Count; index++)
{
if (this.grid_Update.Columns[index].HeaderText == "SomeHeader")
this.grid_Update.Columns[index].Visible = false;
}

2. "SomeHeader" is nothing but the column header.

Regards n Thks Sam.M

User 2942716

Thanks Sam, for the quick and effective reply!!! :-D

Sam M

You're most welcome.

Regards n Thks Sam.M