Question

我正在尝试捕获屏幕，此代码正在本地服务器上运行，但是当我在Web服务器上运行System.ArgumentException时：出现参数无效异常。这是我的代码

Bitmap bitmap = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
Graphics graphics = Graphics.FromImage(bitmap as System.Drawing.Image);
using (Graphics memoryGraphics = Graphics.FromImage(bitmap))
{
    memoryGraphics.CopyFromScreen(Screen.PrimaryScreen.Bounds.X,Screen.PrimaryScreen.Bounds.Y,0,0,bitmap.Size,CopyPixelOperation.SourceCopy);
        //// graphics.CopyFromScreen(143, 63, 100, 100, bitmap.Size);
}

以下是例外：

[ArgumentException：参数无效。] System.Drawing.Graphics.GetHdc（）+ 1138213 System.Drawing.Graphics.CopyFromScreen（Int32 sourceX，Int32 sourceY，Int32 destinationX，Int32 destinationY，Size blockRegionSize，CopyPixelOperation copyPixelOperation）+413 _Default.Button9_Click1（Object sender，EventArgs e）位于d：\ home \ site \ wwwroot \ CS.aspx.cs：173 System.Web.UI.WebControls.Button.OnClick（EventArgs e）+9696694 System.Web.UI.WebControls.Button.RaisePostBackEvent（String eventArgument）+204 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent（String eventArgument）+12 System.Web.UI.Page.RaisePostBackEvent（IPostBackEventHandler sourceControl，String eventArgument）+15 System.Web.UI.Page.RaisePostBackEvent（NameValueCollection postData）+9654230 System.Web.UI.Page.ProcessRequestMain（Boolean includeStagesBeforeAsyncPoint，Boolean includeStagesAfterAsyncPoint）+1639'

System.ArgumentException：参数不是copfromscreen（）函数

0 个答案: