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ScrollItems Method

Summary

Scrolls the content of the control.

Syntax

C++/CLI

C++

public void ScrollItems( 
   int amount 
)

public: 
void ScrollItems(  
   int amount 
)

public:  
   void ScrollItems( 
      Int32 amount 
   )

Parameters

amount
Rows or columns to scroll.

Remarks

If the ScrollStyle value is set to RasterImageListScrollStyle.Vertical, then amount should be the number of rows to scroll up or down. A positive number will scroll the context of the control down, a negative number will scroll the context of the control up.

If the ScrollStyle value is set to RasterImageListScrollStyle.Horizontal, then amount should be the number of columns to scroll left or right. A positive number will scroll the context of the control to the right, a negative number will scroll the context of the control to the left.

Example

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()); 
}

Requirements

Target Platforms