How To Update A Column In A DataGrid Using C#.NET?
I am getting InvalidCastException as (Specified cast is not
valid) while updating 2nd column in a datagrid?
Id,firstname,lastname are the three columns of my datagrid
respectively. I wanted to edit the second column(lastname)
and update it. I did the following code in DataGrid's
updatecommand(),but failed to update !
Int varid=(int)DataGrid1.DataKeys[e.Item.ItemIndex];
TextBox lnm=(TextBox)e.Item.Cells[2].Controls[0]; string
str=lnm.Text ; SqlCommand cmd=new SqlCommand("update
customer set lastname='" + str + "' where id=" + varid
+ "",con); cmd.ExecuteNonQuery(); DataGrid1.EditItemIndex=-
1; DataGrid1.DataBind();
i making a project using windows application c#, i want to
show user name, password, and one button login. i wanna
make it with sealed class .how its possible . when i
clicked my login button all project should be open. pls
cleare me.
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OleDbDataAdapter ole=new OleDbDataAdapter(new OleDbCommand
("select * from login",oleDbConnection1));
OleDbCommandBuilder cmd=new
OleDbCommandBuilder(ole);
ole.Fill(dataSet11,"login");
DataRow drow=dataSet11.Tables
["login"].NewRow();
drow[0]=textBox1.Text;
drow[1]=textBox2.Text;
drow[2]=textBox3.Text;
dataSet11.Tables["login"].Rows.Add
(drow);
ole.UpdateCommand=cmd.GetUpdateCommand();
ole.Update(dataSet11,"login");
MessageBox.Show("one row added");
this gives exception.how to solve it
The answers which posted above is not satisfied my
requirement? Can some one post teh exact answer? Thanx
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