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ScrollStyle Property
See Also  Example
Leadtools.WinForms Namespace > RasterImageList Class : ScrollStyle Property



Specifies the direction the RasterImageList Control scrolls the displayed items.

Syntax

Visual Basic (Declaration) 
<DescriptionAttribute("Specifies the direction the control scrolls the displayed items.")>
<CategoryAttribute("Behavior")>
Public Property ScrollStyle As RasterImageListScrollStyle
Visual Basic (Usage)Copy Code
Dim instance As RasterImageList
Dim value As RasterImageListScrollStyle
 
instance.ScrollStyle = value
 
value = instance.ScrollStyle
C# 
[DescriptionAttribute("Specifies the direction the control scrolls the displayed items.")]
[CategoryAttribute("Behavior")]
public RasterImageListScrollStyle ScrollStyle {get; set;}
C++/CLI 
[DescriptionAttribute("Specifies the direction the control scrolls the displayed items.")]
[CategoryAttribute("Behavior")]
public:
property RasterImageListScrollStyle ScrollStyle {
   RasterImageListScrollStyle get();
   void set (RasterImageListScrollStyle value);
}

Return Value

A RasterImageListScrollStyle enumeration that specifies the direction the RasterImageList Control scrolls the displayed items. Default value is RasterImageListScrollStyle.Vertical.

Example

This example fills a RasterImageList control with 10 items. It will then show the difference between vertical and horizontal scrolling styles.

Visual BasicCopy Code
Public Sub RasterImageList_ScrollStyle(ByVal imageList As RasterImageList)
    ' Clear out any items in the image list
    imageList.Items.Clear()
    ' Create 20 items
    For i As Integer = 0 To 19
        ' Load the image
        Dim index As Integer = i + 1
        Dim item As RasterImageListItem = New RasterImageListItem(Nothing, 1, "Item" & index.ToString())

        ' Select every otehr item
        If (i Mod 2) = 0 Then
            item.Selected = True
        End If

        ' Add the item to the image list
        imageList.Items.Add(item)
    Next i

    ' Set vertical scrolling style
    imageList.ScrollStyle = RasterImageListScrollStyle.Vertical

    ' Scroll a couple of lines down
    imageList.ScrollItems(2)

    ' Show the scroll parameters of the control
    ShowScrollParameters(imageList)

    ' Switch to horizontal scrolling style
    imageList.ScrollStyle = RasterImageListScrollStyle.Horizontal

    ' Show the scroll parameters of the control
    ShowScrollParameters(imageList)
End Sub


Private Sub ShowScrollParameters(ByVal imageList As RasterImageList)
    Dim sb As StringBuilder = New StringBuilder()
    sb.AppendFormat("Full Visible Rows: {0}{1}", imageList.FullVisibleRows, Environment.NewLine)
    sb.AppendFormat("Visible Rows: {0}{1}", imageList.VisibleRows, Environment.NewLine)
    sb.AppendFormat("Full Visible Columns: {0}{1}", imageList.FullVisibleColumns, Environment.NewLine)
    sb.AppendFormat("Visible Columns:{0}{1}", imageList.VisibleColumns, Environment.NewLine)
    sb.AppendFormat("TotalRows: {0}{1}", imageList.TotalRows, Environment.NewLine)
    sb.AppendFormat("TotalColumns: {0}{1}", imageList.TotalColumns, Environment.NewLine)
    sb.AppendFormat("TopIndex: {0}{1}", imageList.TopIndex, Environment.NewLine)
    MessageBox.Show(sb.ToString())
End Sub
C#Copy Code
public void RasterImageList_ScrollStyle(RasterImageList imageList) 
{ 
   // Clear out any items in the image list 
   imageList.Items.Clear(); 
   // Create 20 items 
   for(int i = 0; i < 20; i++) 
   { 
      // Load the image 
      int index = i + 1; 
      RasterImageListItem item = new RasterImageListItem(null, 1, "Item" + index.ToString()); 
 
      // Select every otehr item 
      if((i % 2) == 0) 
         item.Selected = true; 
 
      // Add the item to the image list 
      imageList.Items.Add(item); 
   } 
 
   // Set vertical scrolling style 
   imageList.ScrollStyle = RasterImageListScrollStyle.Vertical; 
 
   // Scroll a couple of lines down 
   imageList.ScrollItems(2); 
 
   // Show the scroll parameters of the control 
   ShowScrollParameters(imageList); 
 
   // Switch to horizontal scrolling style 
   imageList.ScrollStyle = RasterImageListScrollStyle.Horizontal; 
 
   // Show the scroll parameters of the control 
   ShowScrollParameters(imageList); 
} 
 
 
private void ShowScrollParameters(RasterImageList imageList) 
{ 
   StringBuilder sb = new StringBuilder(); 
   sb.AppendFormat("Full Visible Rows: {0}{1}", imageList.FullVisibleRows, Environment.NewLine); 
   sb.AppendFormat("Visible Rows: {0}{1}", imageList.VisibleRows, Environment.NewLine); 
   sb.AppendFormat("Full Visible Columns: {0}{1}", imageList.FullVisibleColumns, Environment.NewLine); 
   sb.AppendFormat("Visible Columns:{0}{1}", imageList.VisibleColumns, Environment.NewLine); 
   sb.AppendFormat("TotalRows: {0}{1}", imageList.TotalRows, Environment.NewLine); 
   sb.AppendFormat("TotalColumns: {0}{1}", imageList.TotalColumns, Environment.NewLine); 
   sb.AppendFormat("TopIndex: {0}{1}", imageList.TopIndex, Environment.NewLine); 
   MessageBox.Show(sb.ToString()); 
}

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also