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DataGrid.IsExpanded Method

Gets a value that indicates whether the node of a specified row is expanded or collapsed.

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

public bool IsExpanded(
	int rowNumber


Type: System.Int32
The number of the row in question.

Return Value

Type: System.Boolean
true if the node is expanded; otherwise, false.

The following code example tests each row in the grid, and prints the row number of expanded rows.

protected void TextExpanded(DataGrid myGrid){
    // Get the DataTable of the grid
    DataTable myTable;
    // Assuming the grid is bound to a DataTable
    myTable = (DataTable) myGrid.DataSource;
    for(int i = 0;i < myTable.Rows.Count ;i++) {
       if(myGrid.IsExpanded(i)) {
          Console.WriteLine("Row " + i + " was expanded");

.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.