Question

c#中未将对象引用到对象实例的问题

这段代码的作用是想打开一个浏览文件的对话框，选择文件上传，不知道哪里出错了，只要一点浏览这个图标就会出现未将对象引用到对象实例的错误。

#region 点击图片浏览 private void button11_Click(object sender, EventArgs e)
{ openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal); openFileDialog.Filter = "图片文件 (*.jpg,*.png,*.bmp,*.gif,*.jpeg)|"/*|*.jpg|*.png|*.bmp|*.gif|*.jpeg"*/; openFileDialog.FilterIndex = 2; openFileDialog.RestoreDirectory = true;
if (openFileDialog.ShowDialog() == DialogResult.OK) { try { string path = this.openFileDialog.FileName; textBox3.Text = this.openFileDialog.FileName; pictureBox1.Image = Image.FromFile(path); pictureBox1.SizeMode = PictureBoxSizeMode.Zoom; } catch (Exception ex) { MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message); } } } #endregion

Answer 1

问题就出在这里 openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
你想给浏览对话框一个默认的打开目录，但这里报错，所以看看你的Environment.GetFolderPath(Environment.SpecialFolder.Personal);
这句话返回的到底是什么？是不是一个有效的存在的目录，如果不存在那就有问题了啊，或者你先把目录写死看报错不！比如openFileDialog.InitialDirectory=“D:\\新建文件夹”