你会发现工具栏上的活动统统没有图标,而在Visual Studio中WF设计器工具栏如下图:
你会发现Visual Studio中的活动的图标非常美观。在你Visual Studio安装的目录下,是没有这些图标的。好了,现在我将从dll中将这些图标找出来。
首先锁定目标:Microsoft.VisualStudio.Activities.dll 。将它从你的C盘中找出来,拷贝到一个目录下,我放在C:\\下面。使用下面这些代码:
1、LoadToolboxIconsForBuiltInActivities,加载内置活动的图标。
private static void LoadToolboxIconsForBuiltInActivities()
{
AttributeTableBuilder builder = new AttributeTableBuilder();
Assembly sourceAssembly = Assembly.LoadFile(@"C:\Microsoft.VisualStudio.Activities.dll");
System.Resources.ResourceReader resourceReader = new System.Resources.ResourceReader( sourceAssembly.GetManifestResourceStream("Microsoft.VisualStudio.Activities.Resources.resources"));
if (type.Namespace == "System.Activities.Statements")
{
CreateToolboxBitmapAttributeForActivity(builder, resourceReader, type);
}
MetadataStore.AddAttributeTable(builder.CreateTable());
}
2、CreateToolboxBitmapAttributeForActivity
private static void CreateToolboxBitmapAttributeForActivity(AttributeTableBuilder builder, System.Resources.ResourceReader resourceReader, Type builtInActivityType)
{
System.Drawing.Bitmap bitmap = ExtractBitmapResource(resourceReader, builtInActivityType.IsGenericType ? builtInActivityType.Name.Split('`')[0] : builtInActivityType.Name);
if (bitmap != null)
{
Type tbaType = typeof(System.Drawing.ToolboxBitmapAttribute);
Type imageType = typeof(System.Drawing.Image);
ConstructorInfo constructor = tbaType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, new Type[] { imageType, imageType }, null);
System.Drawing.ToolboxBitmapAttribute tba = constructor.Invoke(new object[] { bitmap, bitmap }) as System.Drawing.ToolboxBitmapAttribute;
builder.AddCustomAttributes(builtInActivityType, tba);
}
}
3、ExtractBitmapResource
private static System.Drawing.Bitmap ExtractBitmapResource(System.Resources.ResourceReader resourceReader, string bitmapName)
{
System.Collections.IDictionaryEnumerator dictEnum = resourceReader.GetEnumerator();
System.Drawing.Bitmap bitmap = null;
while (dictEnum.MoveNext())
{
if (String.Equals(dictEnum.Key, bitmapName))
{
bitmap = dictEnum.Value as System.Drawing.Bitmap;
System.Drawing.Color pixel = bitmap.GetPixel(bitmap.Width-1, 0);
bitmap.MakeTransparent(pixel);
break;
}
}
return bitmap;
}
4、在工作流器宿主中添加下面代码:
LoadToolboxIconsForBuiltInActivities();
重新运行你的设计器,你会有惊奇发现,如下图:
有个别的活动图标不在Microsoft.VisualStudio.Activities.dll 中,所以仍然没有显示。
ps:本程序运行在Visual Studio2010 RC中
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