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DataGridColumnStyle.CheckValidDataSource Method

Throws an exception if the System.Windows.Forms.DataGrid does not have a valid data source, or if this column is not mapped to a valid property in the data source.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

protected void CheckValidDataSource(
	CurrencyManager value


Type: System.Windows.Forms.CurrencyManager
A CurrencyManager to check.


The value is null.


The PropertyDescriptor for this column is null.

The following code example gets a CurrencyManager for a data source and uses the CheckValidDataSource to determine if the CurrencyManager is valid.

private void CheckCurrencyManager(CurrencyManager myCurrencyManager) {
    // This code is from a class named MyDataGridColumnStyle derived
    // from DataGridColumnStyle.
    MyDataGridColumnStyle myGridColumn = this;
    try {
    catch (ArgumentNullException e) {
    catch (ApplicationException e) {

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.