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How to show item in dropdownlist as being selected when we have corresponding datatextfield from gridview selected row

Code :

DataSet ds = _dalEquipmentwiseCheckList.getEquipmentName();

ddEquipmentName.DataSource = ds.Tables[0].DefaultView;

ddEquipmentName.DataTextField = ds.Tables[0].Columns[1].ToString();
ddEquipmentName.DataValueField = ds.Tables[0].Columns[0].ToString();
ddEquipmentName.DataBind();

What I want is: when selecting a row in the GridView, the corresponding equipment name should get selected in the dropdown list:

var selectRow = MyGridView.SelectedRow;

ddEquipmentName.SelectedValue = selectRow.Cells[2].Text;
****//this is giving me error****

Selected value does not work in this way. Try this:

ddEquipmentName.SelectedIndex = ddEquipmentName.Items.IndexOf(ddEquipmentName.Items.FindByText(selectRow.Cells[2].Text));

You can try :

GridViewRow selectRow = MyGridView.SelectedRow;    
ddEquipmentName.selectedItem.Text = selectRow.Cells[2].Text;
 void setDataContext()
{
    var selectRow = GridEquipmentChechList.MyGridView.SelectedRow;
    if (selectRow != null)
    {
        txtECNumber.Text = selectRow.Cells[1].Text;
        **ddEquipmentName.SelectedIndex = ddEquipmentName.Items.IndexOf(ddEquipmentName.Items.FindByText(selectRow.Cells[2].Text));**
        **ddDescription.SelectedIndex = ddDescription.Items.IndexOf(ddDescription.Items.FindByText(selectRow.Cells[3].Text));**
    }
}

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