Thank you Dimitar, This was so helpfull.

I need the same for GridViewComboBoxColumn  instead of GridViewTextBoxColumn

Hi Dimitar,

Thank you show much, Its working fine....

How we get value of typed text in TextBoxItem_KeyPress event

Hi Dimitar,

Now I am getting value of my typed text..

I wanna search name in my db by using that typed text and bind in same column(GridViewComboBoxColumn)

I am trying like this

private void TextBoxItem_KeyDown(object sender, KeyEventArgs e)
{
    var textBoxItem = sender as RadTextBoxItem;
    var text = textBoxItem.Text;

Datatable dt = new DataTable();

string sql = "select firstname from Namemaster where firstname like '%" + text + "%' or lastname like '%" + text + "%'  or middlename like '%" + text + "%'";

dt = objdl.getDataTable(sql);

GridViewComboBoxColumn comboboxcolumn = (radGV.Columns["Combo"] as GridViewComboBoxColumn);
            comboboxcolumn.DataSource = dt;
}

public DataTable getDataTable(string str)

{

con.Open();
                sqlcom = new SqlCommand(str, con);
                sqlcom.CommandTimeout = 300;
                dr = sqlcom.ExecuteReader();
                dt = new DataTable();
                dt.Load(dr);
                con.Close();

}

But it will not working properly

I want to display firstname only in my GridViewComboBoxColumn if i searching with lastname and middlename.

while searching with firstname everything is fine, i need the same result for lastname and middlename.

Actually me need is..

I hava RadGridView with GridViewComboBoxColumn with AutoComplete, while i am searching in GridViewComboBoxColumn i want to check in my table with firstname,lastname and midlename with typed text and bind firstname only in my GridViewComboBoxColumn

I need a solution for this...

Hi Dimitar,

I have RadGridview with GridViewTextBoxColumn and I have some value in my GridViewTextBoxColumn then i want to assign again value in GridViewTextBoxColumn
my code is

radGV.Rows[radGV.CurrentCell.RowIndex].Cells["Colname"].Value = "aaaaa";

But its throw exception

Object reference not set to an instance of object

Thank you so much Dimitar, now its working fine.I have done my work...