WPF選擇文件、文件夾和另存為對話框

 

一 WPF

1.1 選擇文件對話框

OpenFileDialog類存在於PresentationFramework.dll程序集。

public string SelectFileWpf()
        {
            var openFileDialog = new Microsoft.Win32.OpenFileDialog()
            {
                Filter = "Text documents (.txt)|*.txt|All files (*.*)|*.*"
            };
            var result = openFileDialog.ShowDialog();
            if (result == true)
            {
                return openFileDialog.FileName;
            }
            else
            {
                return null;
            }
        }

 1.2選擇文件夾

WPF提供了選擇文件對話框，但並沒有提供選擇文件夾的對話框。

1.3另存為對話框

SaveFileDialog類位於PresentationFramework.dll 的Microsoft.Win32命名空間

public static string ChooseSaveFile(string title,string initFolder)
        {
            SaveFileDialog dlg = new SaveFileDialog();
            dlg.Title = title;
            dlg.FileName = "User.txt"; // Default file name
            dlg.DefaultExt = ".txt"; // Default file extension
            dlg.Filter = "Text documents|*.txt"; // Filter files by extension
            dlg.InitialDirectory = initFolder;

            // Process save file dialog box results
            if (dlg.ShowDialog() == true)
            {
                return dlg.FileName;
            }
            else
            {
                return null;
            }
        }

 

二 WinForm

下面需要添加System.Windows.Forms.dll

2.1選擇文件

 

1  public string SelectFile() //彈出一個選擇文件的對話框
2         {
3             OpenFileDialog file = new OpenFileDialog(); 4  file.ShowDialog(); 5 return file.SafeFileName; 6 }

 

 

2.2選擇文件夾

using System.Windows.Forms;

FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog();
            if (folderBrowserDialog.ShowDialog() == DialogResult.OK)
            {
                string outDir = folderBrowserDialog.SelectedPath;
            }

 

 

 

參考：

https://docs.microsoft.com/zh-cn/dotnet/api/system.windows.forms.openfiledialog?view=netframework-4.7.2

C# 文件過濾器filter