www.pudn.com > wxwinter2.rar > wxdActivityToolItem.cs

using System.Runtime.Serialization.Formatters.Binary; 
using System.Collections; 
using System.ComponentModel.Design; 
using System.ComponentModel; 
using System.ComponentModel.Design.Serialization; 
using System.Diagnostics; 
using System.Drawing.Design; 
using System.Drawing.Text; 
using System.Drawing; 
using System.IO; 
using System.Reflection; 
using System.Runtime.InteropServices; 
using System.Runtime.Remoting; 
using System.Runtime.Serialization.Formatters; 
using System.Text; 
using System.Windows.Forms.ComponentModel; 
using System.Windows.Forms.Design; 
using System.Windows.Forms; 
using System; 
using System.Workflow.Activities; 
using System.Workflow.ComponentModel; 
using System.Workflow.ComponentModel.Design; 
 
namespace wxwinter.wf.Design 
{ 
    public class wxdActivityToolItem 
    { 
        private string componentClassName; 
        private Type componentClass; 
        private string name = null; 
        private string className = null; 
        private Image glyph = null; 
 
        public wxdActivityToolItem(string componentClassName) 
        { 
            this.componentClassName = componentClassName; 
        } 
 
        public string ClassName 
        { 
            get 
            { 
                if (className == null) 
                { 
                    className = ComponentClass.FullName; 
                } 
 
                return className; 
            } 
        } 
 
        public Type ComponentClass 
        { 
            get 
            { 
                if (componentClass == null) 
                { 
                    componentClass = Type.GetType(componentClassName); 
                    if (componentClass == null) 
                    { 
                        int index = componentClassName.IndexOf(","); 
                        if (index >= 0) 
                            componentClassName = componentClassName.Substring(0, index); 
 
                        foreach (AssemblyName referencedAssemblyName in Assembly.GetExecutingAssembly().GetReferencedAssemblies()) 
                        { 
                            Assembly assembly = Assembly.Load(referencedAssemblyName); 
                            if (assembly != null) 
                            { 
                                componentClass = assembly.GetType(componentClassName); 
                                if (componentClass != null) 
                                    break; 
                            } 
                        } 
 
                        //Finally check in Activities dll 
                        componentClass = typeof(SequentialWorkflowActivity).Assembly.GetType(componentClassName); 
                    } 
                } 
 
                return componentClass; 
            } 
        } 
 
        public string Name 
        { 
            get 
            { 
                if (name == null) 
                { 
                    if (ComponentClass != null) 
                        name = ComponentClass.Name; 
                    else 
                        name = "Unknown Item"; 
                } 
 
                return name; 
            } 
        } 
 
        public virtual Image Glyph 
        { 
            get 
            { 
                if (glyph == null) 
                { 
                    Type t = ComponentClass; 
 
                    if (t == null) 
                        t = typeof(Component); 
 
                    ToolboxBitmapAttribute attr = (ToolboxBitmapAttribute)TypeDescriptor.GetAttributes(t)[typeof(ToolboxBitmapAttribute)]; 
 
                    if (attr != null) 
                        glyph = attr.GetImage(t, false); 
                } 
                return glyph; 
            } 
        } 
 
        public override string ToString() 
        { 
            return componentClassName; 
        } 
    } 
}