Casting error when setting source with axSpreadsheet control

I use the axSpreadsheet control开发者_如何学Python in C#, but when I set the source there's an error.

error: can not cast "System.Data.DataTable" to "msdatasrc.DataSource"

My Code:

  string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filename + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'";
        OleDbConnection conn = new OleDbConnection(strConn);
        conn.Open();
        DataSet ds = new DataSet();
        OleDbDataAdapter odda = new OleDbDataAdapter("select * from [电子订单$]", conn);
        odda.Fill(ds, "table");
        axSpreadsheet1.DataSource = ds.Tables[0];

Then I modify the code: axSpreadsheet1.DataSource = ds.Tables[0]; to axSpreadsheet1.DataSource = (msdatasrc.DataSource)ds.Tables[0];, and still have the error.

What can I do?

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One obvious solution is to examine what is msdatasrc.DataSource. Create a new instance of it and than copy over the table rows to it, row by row or by using some other tool.