生成二维码时出错[重复]

Question

目前我正在开发 ASP.NET 项目，该项目需要生成带有嵌入式链接的二维码。我收到此错误：-

    A generic error occurred in GDI+.

我使用的代码：-

    Bitmap img = encoder.Encode("http://localhost)/GFile/%20" + lblId.Text);
    img.Save("~/QRimage/" + txtFName.Text + ".jpg", ImageFormat.Jpeg);
    QRImage.ImageUrl = txtFName.Text + ".jpg";

堆栈跟踪：-

    [ExternalException (0x80004005): A generic error occurred in GDI+.]
    System.Drawing.Image.Save(String filename, ImageCodecInfo encoder,  
    EncoderParameters encoderParams) +461268
    System.Drawing.Image.Save(String filename, ImageFormat format) +69
    ViewResume.btnQRcode_Click(Object sender, EventArgs e) in   
    c:\Users\Samba\Desktop\Den\ViewResume.aspx.cs:341
    System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
    System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
    System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.
    RaisePostBackEvent(String eventArgument) +10
    System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String 
    eventArgument) +13
    System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,   
    Boolean includeStagesAfterAsyncPoint) +5563

Answer 1

你有一个错误的括号
改变这个：

Bitmap img = encoder.Encode("http://localhost)/GFile/%20" + lblId.Text);

到这里：

Bitmap img = encoder.Encode("http://localhost/GFile/%20" + lblId.Text);