How Can I Remove Duplicate Rows from a DataTable?

Efficiently Removing Duplicate Rows from DataTables

DataTables are essential for data management and analysis. However, duplicate data can compromise data integrity and slow down analysis. This guide demonstrates a simple and effective method to eliminate duplicate rows from a DataTable.

The Solution

The most efficient way to remove duplicate rows is using the DefaultView and ToTable method combination:

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

This concise code snippet achieves deduplication as follows:

• dtEmp: This represents your original DataTable containing potential duplicate rows.
• dtEmp.DefaultView: Accesses the DataTable's default view, providing a DataView object.
• ToTable(true): The crucial step. The true argument instructs the ToTable method to create a new DataTable (uniqueTable) containing only the unique rows from the original dtEmp DataTable. Duplicate rows are omitted.

The uniqueTable now holds a clean copy of your data, free from redundant entries. This approach is both efficient and straightforward.

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