Question

I have created a windows application in C# and I am using excel as a temporary database. I am able to read in the excel data, but I have no idea how to update the cell value in that file using C#.

The structure is as follows:

I want to update the done field to yes after finishing the execution.

Answer 1

I have to update

Extended Properties=HDR=NO; IMEX=1

with

Extended Properties=HDR=YES;

so it will be:

connString = "Provider=Microsoft.Jet.OLEDB.4.0;Excel 8.0; Extended Properties=HDR=YES;Data Source=" + Directory.GetCurrentDirectory() + "/swtlist.xls";

OleDbConnection oledbConn = new OleDbConnection(connString);

oledbConn.Open();
DataTable dt = oledbConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

OleDbCommand cmd = new OleDbCommand("UPDATE [Sheet1$] SET done='yes' where id=1", oledbConn);

cmd.ExecuteNonQuery();