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?
how to create a quiz software using 4 options to answer
and how to check with answers in the database and award
marks....
86
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.
59
How do we invoke queries from the application
61
how to add a selected row of a gridview to another gridview
without reloading the page??
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?
67
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
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