如何在ComboBox项目旁添加小图标

Question

我想在组合框的项目左边添加小图标，请问该怎样做？谢谢！

Answer 1

这个需要自定义COMBOBX，你要重写COMBOBOX里面的事件，

这里有个DEMO.你参照下

http://www.codeproject.com/Articles/10670/Image-ComboBox-Control

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http://blog.csdn.net/zx13525079024

Answer 2

您介绍的那个可以直接拿来用了，谢谢！

另外我还在网上找到一个自定义组合框，更简单，只是组合框的文本框只能显示文本，没有小图标，请问应该怎样改，文本框才能显示小图标＋文本？

using System;
using System.Windows.Forms;
using System.Drawing;

namespace MyProject
{
   class ComboBoxEx : ComboBox
   {
      private ImageList imageList;

      public ImageList ImageList
      {
         get { return imageList; }
         set { imageList = value; }
      }

      public ComboBoxEx()
      {
         DrawMode = DrawMode.OwnerDrawFixed;
      }

      protected override void OnDrawItem(DrawItemEventArgs ea)
      {
         ea.DrawBackground();
         ea.DrawFocusRectangle();

         ComboBoxExItem item;
         Size imageSize = imageList.ImageSize;
         Rectangle bounds = ea.Bounds;

         try
         {
            item = (ComboBoxExItem)Items[ea.Index];

            if (item.ImageIndex != -1)
            {
               imageList.Draw(ea.Graphics, bounds.Left, bounds.Top,
                item.ImageIndex);
               ea.Graphics.DrawString(item.Text, ea.Font,
    new SolidBrush(ea.ForeColor), bounds.Left +
    imageSize.Width, bounds.Top);
            }
            else
            {
               ea.Graphics.DrawString(item.Text, ea.Font,
    new SolidBrush(ea.ForeColor), bounds.Left, bounds.Top);
            }
         }
         catch
         {
            if (ea.Index != -1)
            {
               ea.Graphics.DrawString(Items[ea.Index].ToString(), ea.Font,
     new SolidBrush(ea.ForeColor), bounds.Left, bounds.Top);
            }
            else
            {
               ea.Graphics.DrawString(Text, ea.Font,
    new SolidBrush(ea.ForeColor), bounds.Left, bounds.Top);
            }
         }

         base.OnDrawItem(ea);
      }
   }

   class ComboBoxExItem
   {
      private string _text;
      public string Text
      {
         get { return _text; }
         set { _text = value; }
      }

      private int _imageIndex;
      public int ImageIndex
      {
         get { return _imageIndex; }
         set { _imageIndex = value; }
      }

      public ComboBoxExItem() : this("")
      {
      }

      public ComboBoxExItem(string text)
         : this(text, -1)
      {
      }

      public ComboBoxExItem(string text, int imageIndex)
      {
         _text = text;
         _imageIndex = imageIndex;
      }

      public override string ToString()
      {
         return _text;
      }
   }
}

Answer 3

dear

可參考

http://www.dotblogs.com.tw/yc421206/archive/2011/03/15/21858.aspx

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秘訣無它，唯勤而已 http://www.dotblogs.com.tw/yc421206/