Programmatically access GridView columns and manipulate

Question

I have a GridView :

Answer 1

You can do this by adding a handler to the RowDataBound event. Add an event handler along this lines of this in your code behind:

protected void myGrid_RowDataBound(Object sender, GridViewRowEventArgs e)
{
    var data = e.Row.DataItem as DataRowView;
    if (data != null)
    {
        var lbtDownload = e.Row.FindControl("lbtDownload");
        lbtDownload.Visible = (bool) data.Row["HasFileForDownload"];
    }
}

In your markup, attach the event handler to the grid:

You will also need to assign an id to the LinkButton, matching the one that you are search for using the FindControl() method in the event handler.

Disclaimer: I am on currently a Linux machine with no chance of testing this. Please report any bugs in the code - feel free to correct them if you have editor rights.