A type conversion error occurred in SQL BULK INSERT

1. Reason: When using sqlbulkcopy batch operation, the map map will show the table node corresponding error.

2. Solution: Set up the field map yourself first

using (SqlConnection con = new SqlConnection (dbconfig.csnisconnstring))
{
Con. Open ();
using (sqltransaction Tran = con. BeginTransaction ())
{
SqlBulkCopy BC = new SqlBulkCopy (Con,
sqlbulkcopyoptions.checkconstraints |
Sqlbulkcopyoptions.firetriggers |
Sqlbulkcopyoptions.keepnulls, Tran);

Sqlbulkcopycolumnmapping m1 = new Sqlbulkcopycolumnmapping ("SchoolID", "SchoolID");
sqlbulkcopycolumnmapping m2 = new Sqlbulkcopycolumnmapping ("AreaCode", "AreaCode");
sqlbulkcopycolumnmapping m3 = new Sqlbulkcopycolumnmapping ("Lastpushdate", "lastpushdate");
Sqlbulkcopycolumnmapping m4 = new Sqlbulkcopycolumnmapping ("Studentcode", "Studentcode");
Sqlbulkcopycolumnmapping m5 = new Sqlbulkcopycolumnmapping ("Studentname", "studentname");
Sqlbulkcopycolumnmapping M6 = new Sqlbulkcopycolumnmapping ("Classcode", "Classcode");
Sqlbulkcopycolumnmapping m7 = new Sqlbulkcopycolumnmapping ("ClassName", "ClassName");
sqlbulkcopycolumnmapping m8 = new Sqlbulkcopycolumnmapping ("Managecode", "Managecode");
Sqlbulkcopycolumnmapping m9 = new Sqlbulkcopycolumnmapping ("Unpushcount", "Unpushcount");

Bc. Columnmappings.add (M1);
Bc. Columnmappings.add (m2);
Bc. Columnmappings.add (m3);
Bc. Columnmappings.add (M4);
Bc. Columnmappings.add (M5);
Bc. Columnmappings.add (M6);
Bc. Columnmappings.add (M7);
Bc. Columnmappings.add (M8);
Bc. Columnmappings.add (M9);

Bc. BatchSize = 10000;
Bc. DestinationTableName = "Xcard_pclexception"; Target table
Bc. WriteToServer (Listall.asdatareader ());
Tran.commit ();
}
Con. Close ();
}

A type conversion error occurred in SQL BULK INSERT