C# 选择文件选择设置类型示例

 例子：

            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Multiselect = false;  //该值确定是否可以选择多个文件
            dialog.Title = "请选择文件";
            dialog.Filter = "图像文件(*.jpg;*.png;*.bmp)|*.jpg;*.png;*.bmp;*.jpge";
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                //设置图片路径
            }
   
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Multiselect = false; //该值确定是否可以选择多个文件
            dialog.Title = "请选择文件";
            dialog.Filter = "文本文件(*.txt)|*.txt";
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                //Text_Path.Text = dialog.FileName;
            }

            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Multiselect = false; //该值确定是否可以选择多个文件
            dialog.Title = "请选择文件";
            dialog.Filter = "所有文件(*.*)|*.*";
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                //Text_Path.Text = dialog.FileName;
            }