Question

I have a DataTable in C# and would like to send it to my SQL CE 4 server. One thing that makes it a bit more complicated is that when it encounters an duplicate, it should either ignore it and move on to the next row in the DataTable. I’ve looked around but a lot of information I find doesn’t seem to work with the CE version of SQL Server. What’s an efficient way of doing this?

Answer 1

Filter your DataTable to exclude the duplicate rows before uploading, using the DataTable.Select Method

e.g.

    DataTable table = DataSet1.Tables["Orders"];

    // Presuming the DataTable has a column named Date.
    string expression;
    expression = "Date > #1/1/00#"; // you will need logic to remove your duplicates
    DataRow[] foundRows;

    // Use the Select method to find all rows excluding duplicates
    foundRows = table.Select(expression);

    // .NET 3.5 onwards
    DataTable filteredDataTable = foundRows.copyToDataTable();