How to Remove Duplicate Entries from a DataTable?

Efficiently Removing Duplicate Rows in DataTables

Duplicate rows in a DataTable can compromise data quality and analysis. This article demonstrates a straightforward method to remove these duplicates.

Problem: How to eliminate duplicate rows from a DataTable?

Solution:

The most efficient way to remove duplicate rows from a DataTable (let's call it "dtEmp") is:

<code class="language-csharp">DataTable uniqueTable = dtEmp.DefaultView.ToTable(true);</code>

This concise code uses the DataTable's DefaultView property to create a DataView. The ToTable(true) method then generates a new DataTable (uniqueTable) containing only the unique rows from the original dtEmp. The true argument specifies that duplicate rows should be removed. This approach ensures data integrity and simplifies subsequent data analysis.

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