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ScrollStyle Property

Summary

Specifies the direction the RasterImageList Control scrolls the displayed items.

Syntax

C++

public RasterImageListScrollStyle ScrollStyle { get; set; }

Public Property ScrollStyle As Leadtools.Winforms.RasterImageListScrollStyle

public: 
property Leadtools.Winforms.RasterImageListScrollStyle ScrollStyle { 
   Leadtools.Winforms.RasterImageListScrollStyle get(); 
   void set (    Leadtools.Winforms.RasterImageListScrollStyle ); 
}

Property 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.

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
 
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()); 
}

Imports Leadtools.WinForms 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
 
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

Requirements

Target Platforms

Reference

RasterImageList Class

RasterImageList Members

Help Version 19.0.2017.10.27

Leadtools.WinForms Assembly

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Leadtools.WinForms Namespace

Assemblies