上传头像

Question

我在做学员上传头像时，想判断上传的头像是否在文件夹已存在，如果存在就删除，可是他总是说此图片正由另一进程使用，因此该进程无法访问该文件

Answer 1

没有释放进程，在Using（）{}里面写他自己会给你释放进程

Answer 2

 if (openFileDialog1.ShowDialog()==DialogResult.OK)
            {
                try
                {
                    openFileDialog1.DefaultExt = "jpg";
                    openFileDialog1.Filter = "jpeg图片格式(*.jpeg)|(*.jpeg)|jpg图片格式(*.jpg)|*.jpg|gif图片格式(*.gif)|*.gif|bmp图片格式(*.bmp)|*.bmp|psd图片格式(*.psd)|*.psd|png图片格式(*.png)|*.png";
                    string en = openFileDialog1.SafeFileName.Substring(openFileDialog1.SafeFileName.IndexOf("."));
                   GetFaceImg();
                   if (faceUrl != "")
                   { 
                       File.Delete(faceUrl);
                   }
                   string url = "";
                    if (stuType== "update")
                    {
                        url = @"F:\项目开发Vss\头像\" + "imgStu" + SutPk + en;//重新命名
                    }
                    else
                        if (stuType == "add")
                        {
                            url = @"F:\项目开发Vss\头像\" + "imgStu" + stuID + en;//重新命名
                        }                    imgurl = url;
                    if (File.Exists(url))
                    {
                        isDelete = 0;
                        filename = openFileDialog1.FileName;
                    }
                    else
                    {
                        isDelete = 1;
                        filename = openFileDialog1.FileName;
                    }
                        
                    
                   
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message) ;
                  
                }
                //finally
                //{
                //    this.pictureBox1.Image.Dispose();
                //}
            }
            else
            {
                
                return;
            }

Answer 3

把什么写到using里面啊拜托说的详细一点谢谢

Answer 4

我已经贴了在上面呢那是选择图片
这是保存的部分代码
 if (stuType == "update")
                {
                    if (imgurl != "")
                    {
                        faceUrl = imgurl;
                    }
                    UpdateStuinfo();
                    this.pictureBox1.Dispose();
                    
                        if (isDelete == 0)
                        {
                            File.Delete(imgurl);
                            File.Copy(filename, imgurl);
                        }
                        else if (isDelete == 1)
                        {
                            File.Copy(filename, imgurl);
                        }
                    
                }