我自己创建了一个使用资源文件---但是有点小问题！！！！

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我自己创建了一个使用资源文件，先向其中写入image okoff。但是怎么读不出来..同时提示。。高手提携一下！！！
private void button27_Click(object sender, System.EventArgs e)
{
//String x=new string(' ',200);
//uint i=200;int j;
//j=GetWindowText(this.Handle,x,i);
//button1.Text=x;
//------------------
ResourceWriter rw = new ResourceWriter ( "My.resources" ) ;
rw.AddResource ( "MyStr" , "从资源文件中读取字符串！" );
Image okoff = Image.FromFile ( "1.bmp" ) ;
rw.AddResource ( "1.bmp" ,okoff ) ;
rw.Generate ( ) ;
rw.Close();

ResourceManager rm = new ResourceManager ("Images",Assembly.GetExecutingAssembly ( ) ) ;
this.button1.Image = ( ( System.Drawing.Bitmap) ( rm.GetObject ( "1.bmp" ) ) ) ;//-----error
//提示：baseName: Images locationInfo: <null> resource file name: Images.resources assembly: API_test, Version=1.0.770.651, Culture=neutral, PublicKeyToken=null

}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////

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