The given ColumnMapping does not match up with any

Question

I dont know why I am getting the above exception, please someone look at it ....

DataTable DataTable_Time = new DataTable("Star_Schema__Dimension_Time");

DataColumn Sowing_Day = new DataColumn();
Sowing_Day.ColumnName = "Sowing_Day";

DataColumn Sowing_Month= new DataColumn();
Sowing_Month.ColumnName = "Sowing_Month";      

DataColumn Sowing_Year = new DataColumn();
Sowing_Year.ColumnName = "Sowing_Year";

DataColumn Visit_Day= new DataColumn();
Visit_Day.ColumnName = "Visit_Day";

DataColumn Visit_Month = new DataColumn();
Visit_Month.ColumnName = "Visit_Month";

DataColumn Visit_Year = new DataColumn();
Visit_Year.ColumnName = "Visit_Year";

DataColumn Pesticide_spray_day = new DataColumn();
Pesticide_spray_day.ColumnName = "Pesticide_spray_day";

DataColumn Pesticide_spray_Month = new DataColumn();
Pesticide_spray_Month.ColumnName = "Pesticide_spray_Month";

DataColumn Pesticide_spray_Year = new DataColumn();
Pesticide_spray_Year.ColumnName = "Pesticide_spray_Year";

DataTable_Time.Columns.Add(Pesticide_spray_Year);
DataTable_Time.Columns.Add(Sowing_Day);
DataTable_Time.Columns.Add(Sowing_Month);
DataTable_Time.Columns.Add(Sowing_Year);
DataTable_Time.Columns.Add(Visit_Day);
DataTable_Time.Columns.Add(Visit_Month);
DataTable_Time.Columns.Add(Visit_Year);
DataTable_Time.Columns.Add(Pesticide_spray_day);
DataTable_Time.Columns.Add(Pesticide_spray_Month);

adapter.SelectCommand = new SqlCommand(
    "SELECT SowingDate,VisitDate,PesticideSprayDate " +
    "FROM Transformed_Table " + 
    "group by SowingDate,VisitDate,PesticideSprayDate", con);

adapter.SelectCommand.CommandTimeout = 1000;

adapter.Fill(DataSet_DistinctRows, "Star_Schema__Dimension_Time");

DataTable_DistinctRows = DataSet_DistinctRows.Tables["Star_Schema__Dimension_Time"];

int row_number = 0;
int i = 3;

foreach(DataRow row  in DataTable_DistinctRows.Rows)
{
    DataRow flatTableRow = DataTable_Time.NewRow();

    string[] Sarray= Regex.Split(row[0].ToString()," ",RegexOptions.IgnoreCase);
    string[] finalsplit = Regex.Split(Sarray[0], "/", RegexOptions.IgnoreCase);
    string[] Sarray1 = Regex.Split(row[1].ToString(), " ", RegexOptions.IgnoreCase);
    string[] finalsplit2 = Regex.Split(Sarray1[0], "/", RegexOptions.IgnoreCase);
    string[] Sarray2= Regex.Split(row[2].ToString(), " ", RegexOptions.IgnoreCase);
    string[] finalsplit3 = Regex.Split(Sarray2[0], "/", RegexOptions.IgnoreCase);             

    flatTableRow["Sowing_Day"] = int.Parse(finalsplit[0]);
    flatTableRow["Sowing_Month"] = int.Parse(finalsplit[0]);
    flatTableRow["Sowing_Year"] = int.Parse(finalsplit[0]);

    flatTableRow["Visit_Day"] = int.Parse(finalsplit2[0]);
    flatTableRow["Visit_Month"] = int.Parse(finalsplit2[0]);
    flatTableRow["Visit_Year"] = int.Parse(finalsplit2[0]);

    flatTableRow["Pesticide_spray_day"] = int.Parse(finalsplit3[0]);
    flatTableRow["Pesticide_spray_Month"] = int.Parse(finalsplit3[0]);
    flatTableRow["Pesticide_spray_Year"] = int.Parse(finalsplit3[0]);

    DataTable_Time.Rows.Add(flatTableRow);

    i++;
}

con.Open();

using (SqlBulkCopy s = new SqlBulkCopy(con))
{
    s.DestinationTableName = DataTable_Time.TableName;

    foreach (var column in DataTable_Time.Columns)
        s.ColumnMappings.Add(column.ToString(), column.ToString());

    s.BulkCopyTimeout = 500;

    s.WriteToServer(DataTable_Time);
}

Answer 1

In my case, it was the wrong database name in "Initial Catalog=" in the connection string.

Answer 2

For other people with the same error (but not applicable in this case, as SqlBulkCopy gets newed up), another cause may be if you are trying to reuse a SqlBulkCopy instance for multiple operations, as the column mappings will persist from operation to operation. In which case, instantiate a new instance of SqlBulkCopy for each operation that requires different column mappings.

Answer 3

I also faced the same issue. In my case, I was getting the Logs table generated from seriLog and it was missing the additional columns in the table creation which was causing the above error.

Once the create the logs table on my own with the required additional columns, this error went away.

Answer 4

I ran into the same error. For me, I was accidentally mapping 2 different columns from the source datatable to the same column in the target database table.

Answer 5

The problem is with the s.ColumnMappings.Add(column.ToString(), column.ToString()); and mapping of your destination and source tables. At least one of the columns in your DataTable doesn't match the destination table.

There are many reasons but one of them can be datatype mismatch. So if you try to insert text into an integer column.