Infragistics logo
메뉴
.NET and JavaScript UI Controls
Version

MinDropDownItems Property

Determines the minimum number of dropdown items that will display in the list at one time.
Syntax
'Declaration
 
Public Property MinDropDownItems As Integer
public int MinDropDownItems {get; set;}
Remarks

MinDropDownItems determines the minimum height of the dropdown based on a number of items that would fit in the dropdown area. If there are fewer items in the list than this property setting, the dropdown will appear with extra space enough to fit the specified number of items.

Attempting to set MinDropDownItems to a value less than 0 or greater than MaxDropDownItems will raise an System.ArgumentOutOfRangeException exception.

Example
Following code initializes the ultraCombo1. It sets some of the commonly used properties of UltraCombo.

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinGrid

  Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load

      Me.oleDbDataAdapter1.Fill(Me.DataSet11)

      ' Following code initializes the control.

      ' Bind the combo to a data source.
      Me.ultraCombo1.DataSource = Me.DataSet11
      Me.ultraCombo1.DataMember = ""

      ' Set the ValueMember and DisplayMember to appropriate column keys.
      Me.ultraCombo1.ValueMember = "ProductID"
      Me.ultraCombo1.DisplayMember = "ProductName"

      ' Set the border style of the edit portion by setting BorderStyle property
      ' off the UltraCombo. BorderStyle property off the DisplayLayout is for
      ' the border of the drop down window.
      Me.ultraCombo1.BorderStyle = UIElementBorderStyle.Solid
      Me.ultraCombo1.DisplayLayout.BorderStyle = UIElementBorderStyle.Solid

      ' Turn on the auto-editing. With this turned on, the UltraCombo will
      ' automatically find a matching item as the user types in.
      Me.ultraCombo1.AutoEdit = True

      ' Set the drop down style.
      Me.ultraCombo1.DropDownStyle = UltraComboStyle.DropDown

      ' Set the appearance of the UltraCombo's edit portion.
      Me.ultraCombo1.Appearance.FontData.Bold = DefaultableBoolean.True
      Me.ultraCombo1.Appearance.ForeColor = Color.Maroon

      ' Set the appearance of the UltraCombo's drop down portion.
      Me.ultraCombo1.DisplayLayout.Appearance.ForeColor = Color.DarkBlue

      ' Set the min and max drop down items.
      Me.ultraCombo1.MinDropDownItems = 5
      Me.ultraCombo1.MaxDropDownItems = 10

  End Sub
using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinGrid;
using System.Diagnostics;

private void Form1_Load(object sender, System.EventArgs e)
{

	this.oleDbDataAdapter1.Fill( this.dataSet11 );
	this.oleDbDataAdapter2.Fill( this.dataSet21 );
	this.oleDbDataAdapter3.Fill( this.dataSet21 );
	this.oleDbDataAdapter4.Fill( this.dataSet21 );

	// Following code initializes the control.

	// Bind the combo to a data source.
	this.ultraCombo1.DataSource = this.dataSet11;
	this.ultraCombo1.DataMember = "";

	// Set the ValueMember and DisplayMember to appropriate column keys.
	this.ultraCombo1.ValueMember   = "ProductID";
	this.ultraCombo1.DisplayMember = "ProductName";

	// Set the border style of the edit portion by setting BorderStyle property
	// off the UltraCombo. BorderStyle property off the DisplayLayout is for
	// the border of the drop down window.
	this.ultraCombo1.BorderStyle = UIElementBorderStyle.Solid;
	this.ultraCombo1.DisplayLayout.BorderStyle = UIElementBorderStyle.Solid;
	
	// Turn on the auto-editing. With this turned on, the UltraCombo will
	// automatically find a matching item as the user types in.
	this.ultraCombo1.AutoEdit = true;

	// Set the drop down style.
	this.ultraCombo1.DropDownStyle = UltraComboStyle.DropDown;

	// Set the appearance of the UltraCombo's edit portion.
	this.ultraCombo1.Appearance.FontData.Bold = DefaultableBoolean.True;
	this.ultraCombo1.Appearance.ForeColor = Color.Maroon;

	// Set the appearance of the UltraCombo's drop down portion.
	this.ultraCombo1.DisplayLayout.Appearance.ForeColor = Color.DarkBlue;

	// Set the min and max drop down items.
	this.ultraCombo1.MinDropDownItems = 5;
	this.ultraCombo1.MaxDropDownItems = 10;

}
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also