DataGrid.AutoGenerateColumns Property

Definition

Namespace:

System.Windows.Controls

Assembly:

PresentationFramework.dll

Gets or sets a value that indicates whether the columns are created automatically.

public:
 property bool AutoGenerateColumns { bool get(); void set(bool value); };

public bool AutoGenerateColumns { get; set; }

member this.AutoGenerateColumns : bool with get, set

Public Property AutoGenerateColumns As Boolean

Property Value

Boolean

true if columns are created automatically; otherwise, false. The registered default is true. For more information about what can influence the value, see DependencyProperty.

Examples

The following example shows how to auto-generate columns and change the columns at creation time in the AutoGeneratingColumn event handler.

<!-- The DataGrid.DataContext is a DataTable that contains a list of customers.  The DataTable columns are  
     Title, FirstName, MiddleName, LastName, Suffix, CompanyName, EmailAddress, and Phone.-->
<DataGrid Name="DG1" ItemsSource="{Binding}" AutoGenerateColumns="True" AutoGeneratingColumn="DG1_AutoGeneratingColumn" />

//Access and update columns during autogeneration
private void DG1_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
{
    string headername = e.Column.Header.ToString();

    //Cancel the column you don't want to generate
    if (headername == "MiddleName")
    {
        e.Cancel = true;
    }

    //update column details when generating
    if (headername == "FirstName")
    {
        e.Column.Header = "First Name";
    }
    else if (headername == "LastName")
    {
        e.Column.Header = "Last Name";
    }
    else if (headername == "EmailAddress")
    {
        e.Column.Header = "Email";
    }
}

'Access and update columns during autogeneration
Private Sub DG1_AutoGeneratingColumn(ByVal sender As Object, ByVal e As DataGridAutoGeneratingColumnEventArgs)
    Dim headername As String = e.Column.Header.ToString()
    'Cancel the column you don't want to generate
    If headername = "MiddleName" Then
        e.Cancel = True
    End If

    'update column details when generating
    If headername = "FirstName" Then
        e.Column.Header = "First Name"
    ElseIf headername = "LastName" Then
        e.Column.Header = "Last Name"
    ElseIf headername = "EmailAddress" Then
        e.Column.Header = "Email"
    End If
End Sub

Remarks

Setting AutoGenerateColumns to true or false creates or removes auto-generated columns. When the AutoGenerateColumns property is set to true, the AutoGeneratingColumn event will be raised for each column that is created. You can change or cancel the column being created in the AutoGeneratingColumn event handler.

When auto-generation of all columns is complete, the AutoGeneratedColumns event is raised.

Note

DataGrid cannot auto-generate columns when the source is XML data. In this case, create a custom Columns collection. For an example, see DataGridTextColumn.

See also

• Columns