DataSource Controls :: Identifying Duplicates In Data Upload?

Mar 3, 2011

Using SQL server and C# to build my web site. I need to do a bulk upload Employee data from Excel to SQL.

I use the following code to perform this. The code works fine.

[Code]....

In the Employee table there is a field called ID which is of type int and auto incrememntral . This is the primary key.

There cannot be duplicates in the combination of EmployeeName and Location. If the user tries to upload ( through the Excel file) the combination of EmployeeName and Location which is there in the database, I need to flag it.

How can I identify the duplicates in an easy way rather than going through all the records again and again? Any functaion in SQL I can use to identify the duplicates?

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