为什么我的 OpenFileDialog 不起作用？

Question

我尝试打开一个文本文档，然后收到消息：来自 try-catch 的文件格式无效。我将 Visual Studio 2015 与 Visual C# 和 Windows 表单应用程序一起使用。

这里是我打开函数的代码：

private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
    try { 
    // Create an OpenFileDialog to request a file to open.
    OpenFileDialog openFile1 = new OpenFileDialog();

    // Initialize the OpenFileDialog to look for RTF files.

    openFile1.Filter = "Text Files (*.txt)|*.txt| RTF Files (*.rtf)|*.rtf| All (*.*)|*.*";

    // Determine whether the user selected a file from the OpenFileDialog.
    if (openFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
       openFile1.FileName.Length > 0)
    {
        // Load the contents of the file into the RichTextBox.
        TextBox.LoadFile(openFile1.FileName);
    }
    }
    catch (Exception a)
    {
        MessageBox.Show(a.Message);
    }
}//end open

希望你能帮我送上友情祝福sniffi

Answer 1

问题可能是您没有加载 RTF 文档 - 请参阅 MSDN 上的 docs。

With this version of the LoadFile method, if the file being loaded is not an RTF document, an exception will occur. To load a different type of file such as an ASCII text file, use the other versions of this method that accept a value from the RichTextBoxStreamType enumeration as a parameter.

所以尝试使用这种方法的重载version，它接受这样的流类型（根据您的需要调整）

TextBox.LoadFile(openFile1.FileName, RichTextBoxStreamType.PlainText);

为什么我的 OpenFileDialog 不起作用？

Why my OpenFileDialog didn´t work?

.net

c#

rtf

winforms