DataGridViewComboBoxCell.MaxDropDownItems 属性
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
获取或设置下拉列表中显示的最大项数。
public:
virtual property int MaxDropDownItems { int get(); void set(int value); };
public virtual int MaxDropDownItems { get; set; }
member this.MaxDropDownItems : int with get, set
Public Overridable Property MaxDropDownItems As Integer
属性值
所允许的下拉列表项数。 最小是 1,最大是 100,默认值是 8。
例外
设置此属性时该值小于 1 或大于 100。
示例
下面的代码示例演示了属性 DataGridViewComboBoxColumn.MaxDropDownItems 的使用,该属性类似于此属性。 此示例是类概述主题中可用的较大示例的 DataGridViewComboBoxColumn 一部分。
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
注解
如果某个属性退出,则MaxDropDownItems更改该属性将更改托管DataGridViewComboBoxEditingControl的相应MaxDropDownItems属性。