以C#Windows形式显示所选路径中的文件 [英] display file from selected path in C# windows form

问题描述

大家好，
我正在C#Windows base上执行程序，我在其中编写代码以获取文本框中文件的路径，但是当我尝试在另一个文本框中打开文件文件时，它没有打开
下面我给出代码

Hi All,
I m doing program on C# windows base where I code for getting the path for a file in text box but when I try to open the file file in another text box it is not opening
below I give the code

private void btnShow_Click(object sender, EventArgs e)
       {
           //001: Check the user selected a file and pressed ok button. Before opening the dialog
           //set the filters
           dlgFileOpen.Filter = "Bitmap Files(*.bmp)|*.bmp|Other Image Files(*.jpg)|*.jpg|" +
           "Text Files(*.txt) | *.txt|All Files(*.*)|*.*";
           if (dlgFileOpen.ShowDialog() == DialogResult.OK)
           {
               txtSelectedFile.Text = dlgFileOpen.FileName;
               string ext = Path.GetExtension(dlgFileOpen.FileName);

           if (ext != ".txt")
           {
               //002: If the extension is Bmp or Jpg display it in the Picture box
               txtFileContent.Visible = false;
               //txtFileContent.Visible = false;
               pict.Visible = true;
               pict.SizeMode = PictureBoxSizeMode.StretchImage;
               pict.Load(dlgFileOpen.FileName);
           }
           else
           {
               //003: The extension is txt. Read the file and display the content
               txtFileContent.Visible = true;
               pict.Visible = false;
               FileStream fstream = new FileStream(dlgFileOpen.FileName, FileMode.Open);
               StreamReader reader = new StreamReader(fstream);
               while (reader.EndOfStream != true)
               {

                    //here it is reading but not open in the text box [txtFileContent]
                   txtFileContent.AppendText(reader.ReadLine());
                   txtFileContent.AppendText(Environment.NewLine);
               }
               reader.Close();
           }
           }
         }

推荐答案

用以下代码替换else块:

Replace your else block with this:

txtFileContent.Visible = true;
pict.Visible = false;
TextReader reader = new StreamReader(dlgFileName.FileName);
txtFileContent.Text = reader.ReadToEnd();
reader.Close();

尝试一下

private void button1_Click(object sender, EventArgs e)
        {
            //001: Check the user selected a file and pressed ok button. Before opening the dialog
            //set the filters
            dlgFileOpen.Filter = "Bitmap Files(*.bmp)|*.bmp|Other Image Files(*.jpg)|*.jpg|" +
            "Text Files(*.txt) | *.txt|All Files(*.*)|*.*";
            if (dlgFileOpen.ShowDialog() == DialogResult.OK)
            {
                txtSelectedFile.Text = dlgFileOpen.FileName;
                string ext = Path.GetExtension(dlgFileOpen.FileName);
//Changes are done in below line
                if (ext.ToLower() == ".bmp" || ext.ToLower() == ".jpg")
                {
                    //002: If the extension is Bmp or Jpg display it in the Picture box
                    txtFileContent.Visible = false;
                    //txtFileContent.Visible = false;
                    pict.Visible = true;
                    pict.SizeMode = PictureBoxSizeMode.StretchImage;
                    pict.Load(dlgFileOpen.FileName);
                }
                else
                {
                    //003: The extension is txt. Read the file and display the content
                    txtFileContent.Visible = true;
                    pict.Visible = false;
                    FileStream fstream = new FileStream(dlgFileOpen.FileName, FileMode.Open);
                    StreamReader reader = new StreamReader(fstream);
                    while (reader.EndOfStream != true)
                    {

                        //here it is reading but not open in the text box [txtFileContent]
                        txtFileContent.AppendText(reader.ReadLine());
                        txtFileContent.AppendText(Environment.NewLine);
                    }
                    reader.Close();
                }
            }
        }

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