vb.net 2008 GDI +中发生了一般错误。 [英] vb.net 2008 A generic error occurred in GDI+.

问题描述

从图片框保存图片时出错。

I am getting an error on saving images from picture box.

<br />
Public Class Form1<br />
    Dim open As OpenFileDialog<br />
    Dim i As String<br />
    Dim img As Image = Nothing<br />
    Dim pic As String<br />
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load<br />
    End Sub<br />
<br />
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click<br />
        open = New OpenFileDialog<br />
        open.Filter = "Image Files(*.jpg;*.jpeg;*.gif;*.bmp;*.png;*.tif)|*.jpg;*.gif;*.bmp;*.tif"<br />
        open.ShowDialog()<br />
        pic = open.FileName<br />
        Try<br />
            Dim fs As New System.IO.FileStream(pic, IO.FileMode.Open, IO.FileAccess.Read)<br />
            img = Image.FromStream(fs)<br />
            fs.Close()<br />
            fs.Dispose()<br />
            emppic.Image = img<br />
        Catch ex As Exception<br />
            img = Nothing<br />
        End Try<br />
    End Sub<br />
<br />
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click<br />
        Dim img6 As Image<br />
        img6 = emppic.Image<br />
        Try<br />
            emppic.Image.Save("C:\C-tek\Images\Temp\1.jpg", System.Drawing.Imaging.ImageFormat.Jpeg)<br />
        Catch ex As Exception<br />
            MsgBox("File  Saving Error." + ex.ToString)<br />
        End Try<br />
    End Sub<br />
End Class

请提前hlp me.thnk

please hlp me.thnk in advance

推荐答案

查看文档： Image.FromStream [ ^ ]

重要的一点是：

你必须在图像的生命周期内保持流打开。



你没有。因此你的问题！

Look at the documentation: Image.FromStream[^]
The important bit is:
"You must keep the stream open for the lifetime of the Image."

You don't. Thus your problem!

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