Object reference not set to an instance of an object.

[yysiow]

hi, help..

protected void Item_Click(object sender, DataGridCommandEventArgs e)
{
if(((LinkButton)e.CommandSource).CommandName == "SelectItem")
{
string key = DataGrid1.DataKeys[e.Item.ItemIndex].ToString();

try
{
DataRow dr = ds1.tblPlasmaInfomation.FindByPlasmaid(Int32.Parse(key));
lbccuname.Text = dr["Plasma_ccuname"].ToString();
}
catch(Exception exc)
{
TextBox1.Text = exc.Message;
}
}

}



i step by step run..and dr always null....how can i sol this
problem..thanks..

 

[Kevin Spencer]

If you can step through it, you can do some Quick Watches as well. You need
to find out what you're getting back with the line of code that assigns a
value to the "key" variable, since obvioulsy you're not getting anything
back when you use it to find your DataRow.

--
HTH,

Kevin Spencer
..Net Developer
Microsoft MVP
http://www.takempis.com
Big things are made up
of lots of little things