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Getting the total number of records in a database table?

Posted By:      Posted Date: October 21, 2010    Points: 0   Category :ASP.Net

How could I get the total number of records present in a database table through asp.net in VB? I know about setting up and opening a connection. I wanted to loop through records, so wanted to know the number of records present. How could that be done? 

Also, I used statements like 'Update' and 'Insert Into' to to change the data in my data source. Like I updated a certain field like this:

ds.Tables("tblUsers").Rows(2)(3) = "xyzzzz" 

and then I executed an sql statement on the same field like this: 

objCmd.UpdateCommand = new OleDbCommand

objCmd.UpdateCommand.CommandText = "Update tblUsers " & _

"SET City='xyzzzz' WHERE UserID=3"  

objCmd.UpdateCommand.Connection = Conn


(where objcmd is an instance of oledbdataadapter object)

What should I do to delete a record or a field in a data source through asp.net?

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