ClearSelection Method

Overview

The ClearSelection method clears the selection state for all rows in a table by setting IDataRow.Selected to false for every row.

This helper is intended for UI-oriented scenarios where a table is used as a selectable list (for example, when your application allows multi-row selection and you want to clear all selections in one operation).

Declaration

/// <summary>
/// Clears selection
/// </summary>
/// <param name="dataTable">Data table</param>
public static void ClearSelection(this IDataTable? dataTable)

Namespace and Assembly

Namespace: PocoDataSet.Extensions
Assembly: PocoDataSet.Extensions.dll

Behavior

• If dataTable is null, returns immediately.
• Iterates through all rows in dataTable.Rows and sets Selected = false.

Usage Example

// 1. Create an empty data set and a table
IDataSet dataSet = DataSetFactory.CreateDataSet();
IDataTable employeeTable = dataSet.AddNewTable("Employee");
employeeTable.AddColumn("Id", DataTypeNames.INT32);
employeeTable.AddColumn("FirstName", DataTypeNames.STRING);
employeeTable.AddColumn("LastName", DataTypeNames.STRING);

// 2. Add several rows and set their Selected flag to true
IDataRow employeeDataRow1 = employeeTable.AddNewRow();
employeeDataRow1["Id"] = 1;
employeeDataRow1["FirstName"] = "John";
employeeDataRow1["LastName"] = "Doe";
employeeDataRow1.Selected = true;

IDataRow employeeDataRow2 = employeeTable.AddNewRow();
employeeDataRow2["Id"] = 2;
employeeDataRow2["FirstName"] = "Sara";
employeeDataRow2["LastName"] = "Gor";
employeeDataRow2.Selected = true;

// Call ClearSelection to clear all selections
employeeTable.ClearSelection();

Notes

• This method changes only the Selected flag. It does not change row values and does not affect DataRowState.
• Selected is a UI-oriented property. If your table does not use selection, calling this method has no practical effect.

 

Table of Content POCO DataSet DataTable Extensions Group DataTable Members

 

---

Business Process Programming in .Net
© 2004–2026 Laskarzhevsky Software Inc.
Unless otherwise noted, the content of this website is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).
Code examples are provided under the MIT License.
You are free to share and adapt the material provided that appropriate credit is given and any modifications are clearly indicated.
The information provided on this website is for educational purposes only.
The author and publisher make no warranties regarding the completeness or suitability of the information and are not responsible for any damages resulting from its use.