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when i give datasource to gridview, the combo in grid is auto selecting

after giving the datasource to grid the first cell of gridview combo is auto selection occuring in datagridview, how to prevent this?

Since it is a dropdown list you have to populate it separately and insert "Select" as 0th item.
I assume this is asp.net application. Here is the link how you can populate and bind dropdown in gridview.
how to bind a dropdownlist in gridview?

Remove or hide summary row in grouped row of telerik winform gridview

I have Telerik WinForm grid view that has several rows. I used summary row that calculate sum of column for me. I used grouping in Telerik WinForm grid view. I just want have one summary row at bottom of grid view not in all grouped rows.

ASP.NET WebForms TreeView Nodes As Table

How can I create ASP.NET TreeView nodes as Table from C#? Like this:

You could bind the Treeview's datasource to a Gridview, Listview, or Repeater.

Highlighting selected row of grid view inside repeater controller

I have a grid view inside a repeater control. when i click on a cell of grid view its open a panel inside the same repeater and page is post back. What i want is to highlight the selected row. how i can do this in asp.net?

Devxpress web Gridview load data on request

I'm developing a web page witch has an AspxTreelist and an ASPxGridView. I would like to fill the grid with data after selecting some nodes on treelist. The treelist nodes are filtering the grid data
Here is my code samples :
Here I'm getting the selected nodes
Categories = new List<int>();
foreach (TreeListNode node in categs)
{
Categories.Add(int.Parse(node["Key"].ToString()));
}
And here I'm filling the grid
if (Categories!= null && Categories.Count > 0)
{
DGEmails.DataSource = Manager.GetBySubTree(Categories);
DGEmails.DataBind();
}
The problem is that after I get the Categories and fill the Grid's datasource (these parts work fine) there are not any data displaying on the grid.

I figured out the problem, it was the fact that treelist by default uses callbacks and I had to disable them.