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();
If we want to connect to many databases in dataaccess layer
such as MSAccess,Sql server,oracle means not to a particular
database depends on condition we have to connect to
appropriate database in this scenario if we without changing
code Ho wdo you handle this situation?
If a table contains 20000 records . In a page at each time
100 records to be displayed. What are the steps u will take
to improve performance? will you use dataset or datareader?
The answers which posted above is not satisfied my
requirement? Can some one post teh exact answer? Thanx
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282
how can implement dropdownlist in particular of dataset
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196
Can we create Synonymns in MS Acess,My Sql Server,Sql
Server?
But iam we can create in oracle!
52
oledbdataadpter with ms access in c#.net giving exception
System.Data.OleDb.OleDbException while writing
adapter.update(dataset,"tabname"); how to update the
database from dataset?
along with your userid / name. ThanQ
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