SqlBulkCopy Not Working

Question

I have a DataSet populated from Excel Sheet. I wanted to use SQLBulk Copy to Insert Records in Lead_Hdr table where LeadId is PK.

Answer 1

What I have found is that the columns in the table and the columns in the input must at least match. You can have more columns in the table and the input will still load. If you have less you'll receive the error.