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sqlbulkinsert error

Last Modified: 2012-05-12
VS2010, SQL Server 2008
Short version: I'm uploading data from an excel spreadsheet, making some string manipulations, and then using sqlbulkinsert to insert it. Besides the data I'm pulling form the spreadsheet, I'm manually adding an ID I get from elsewhere. I'm adding this in the Excel query like this "string excelQuery = SELECT *, " + hdnRigID.Value + " FROM [Sheet1$" + txtFromCell.Text.Trim() + ":" + txtToCell.Text.Trim() + "]";

The field in the database is an int. Upon writing to the server I get the following error: "The given value of type String from the data source cannot be converted to type int of the specified target column."

Is there anyway I can make these datatypes match???  
protected void ButtonUploadFile_Click(object sender, System.EventArgs e)
string excelQuery = "SELECT *, " + hdnRigID.Value + " FROM [Sheet1$" + txtFromCell.Text.Trim() + ":" + txtToCell.Text.Trim() + "]";

if (File.Exists(uploadFile.SavePath))
BulkSqlShipperImporter importer = new BulkSqlShipperImporter();
connectionMessage = uploadFile.GetOleDbConnectionString();
importer.SourceConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:(...)\\bf6a119e2fcc4a58aa8226cfa1ec0a08_DCL TOI POB.xls;Extended Properties=\"Excel 8.0;HDR=NO;IMEX=1\";

importer.Import(excelQuery, hdnCustomerID.Value);

importer.Import class:

public override void Import(string query, string customer)
        string destinationConnectionString = ...
        using (OleDbConnection myConnection = new OleDbConnection(base.SourceConnectionString))
        using (SqlConnection destinationConnection = new SqlConnection(destinationConnectionString))
        using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection))
            bulkCopy.ColumnMappings.Add(0, "Name");
            bulkCopy.ColumnMappings.Add(1, "RigID");
            bulkCopy.DestinationTableName = "dbo.LookUp";

            using (var myCommand = new OleDbCommand(query, myConnection))
                DataTable dt = new DataTable();
                OleDbDataAdapter da = new OleDbDataAdapter(myCommand);


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