DataGridViewComboBoxColumn.MaxDropDownItems Property

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Source:: DataGridViewComboBoxColumn.cs

Source:: DataGridViewComboBoxColumn.cs

Source:: DataGridViewComboBoxColumn.cs

Important

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Gets or sets the maximum number of items in the drop-down list of the cells in the column.

public:
 property int MaxDropDownItems { int get(); void set(int value); };

public int MaxDropDownItems { get; set; }

member this.MaxDropDownItems : int with get, set

Public Property MaxDropDownItems As Integer

Property Value

Int32

The maximum number of drop-down list items, from 1 to 100. The default is 8.

Exceptions

InvalidOperationException

The value of the CellTemplate property is null.

Examples

The following code example demonstrates how to use a DataGridViewComboBoxColumn to aid in entering data into the TitleOfCourtesy column. This example is part of a larger example available in the DataGridViewComboBoxColumn class overview topic.

private:
    void SetAlternateChoicesUsingItems(
        DataGridViewComboBoxColumn^ comboboxColumn)
    {
        comboboxColumn->Items->AddRange("Mr.", "Ms.", "Mrs.", "Dr.");
    }

private:
    DataGridViewComboBoxColumn^ CreateComboBoxColumn()
    {
        DataGridViewComboBoxColumn^ column =
            gcnew DataGridViewComboBoxColumn();
        {
            column->DataPropertyName = ColumnName::TitleOfCourtesy.ToString();
            column->HeaderText = ColumnName::TitleOfCourtesy.ToString();
            column->DropDownWidth = 160;
            column->Width = 90;
            column->MaxDropDownItems = 3;
            column->FlatStyle = FlatStyle::Flat;
        }
        return column;
    }

private static void SetAlternateChoicesUsingItems(
    DataGridViewComboBoxColumn comboboxColumn)
{
    comboboxColumn.Items.AddRange("Mr.", "Ms.", "Mrs.", "Dr.");
}

private DataGridViewComboBoxColumn CreateComboBoxColumn()
{
    DataGridViewComboBoxColumn column =
        new DataGridViewComboBoxColumn();
    {
        column.DataPropertyName = ColumnName.TitleOfCourtesy.ToString();
        column.HeaderText = ColumnName.TitleOfCourtesy.ToString();
        column.DropDownWidth = 160;
        column.Width = 90;
        column.MaxDropDownItems = 3;
        column.FlatStyle = FlatStyle.Flat;
    }
    return column;
}

Private Shared Sub SetAlternateChoicesUsingItems( _
    ByVal comboboxColumn As DataGridViewComboBoxColumn)

    comboboxColumn.Items.AddRange("Mr.", "Ms.", "Mrs.", "Dr.")

End Sub

Private Function CreateComboBoxColumn() _
    As DataGridViewComboBoxColumn
    Dim column As New DataGridViewComboBoxColumn()

    With column
        .DataPropertyName = ColumnName.TitleOfCourtesy.ToString()
        .HeaderText = ColumnName.TitleOfCourtesy.ToString()
        .DropDownWidth = 160
        .Width = 90
        .MaxDropDownItems = 3
        .FlatStyle = FlatStyle.Flat
    End With
    Return column
End Function

Remarks

Getting or setting this property gets or sets the MaxDropDownItems property of the object returned by the CellTemplate property. Setting this property also sets the MaxDropDownItems property of every cell in the column. To override the specified value for individual cells, set the cell values after you set the column value.

Applies to

Product	Versions
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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