Question

可能重复：
“Parameter not valid” exception loading System.Drawing.Image

我在DB中插入图像。

这是我的代码

public class ImageUtils
{
    const int sizeThumb = 69;

    public static int uploadImage(int memberid, Image thumbimage)
    {
        MemoryStream stream = new MemoryStream();
        thumbimage.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp);
        Byte[] thumbbytes = stream.ToArray();

        //int length = Convert.ToInt32(data.Length);
        //byte[] thumbimage = new byte[length];
        //data.Read(thumbimage, 0, length);
        SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["FMMImages"].ConnectionString);
        SqlCommand command = new SqlCommand("update Images_temp set thumbimage = @thumbimage where memberid=@memberid", connection);
        SqlParameter param0 = new SqlParameter("@thumbimage", SqlDbType.Image);
        param0.Value = thumbbytes;
        command.Parameters.Add(param0);

        connection.Open();

        object result = command.ExecuteScalar();
        connection.Close();
        if (result != null)
        {
            return System.Convert.ToInt32(result);
        }
        else
        { 
            return 0;
        }
    }

aspx.cs我正在调用uploadimage image CroppedWaterMarkImage ......

    ImageUtils.uploadImage(memberid, CroppedWaterMarkImage);

uploadimage函数出错：

     MemoryStream stream = new MemoryStream();
     thumbimage.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp);
     Byte[] thumbbytes = stream.ToArray();

System.ArgumentException：参数无效。

由于太阳

Answer 1

由于内存泄漏，这些人遇到了与Images和MemoryStream（）类似的问题：

http://blog.lavablast.com/post/2007/11/29/The-Mysterious-Parameter-Is-Not-Valid-Exception.aspx

通过调用System.Drawing.Bitmap而不是System.Drawing.Image来解决此链接：

（内存泄漏/损坏和/或API的选择）可能适用于您的方案。

还要确保图像文件有效。

System.ArgumentException：参数无效

1 个答案: