OpenFileDialog C# custom filter like 'ABC*.pdf'

OpenFileDialog C# custom filter like 'ABC*.pdf'

To create a custom filter for an OpenFileDialog in C# that matches a pattern like "ABC*.pdf", you can use the FileDialog.Filter property to specify the filter string.

Here's an example of how to create a custom filter that matches the pattern "ABC*.pdf":

var openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "PDF files (*.pdf)|*.pdf|ABC PDF files (ABC*.pdf)|ABC*.pdf";

In this example, the filter string consists of two parts separated by the pipe character '|':

  • "PDF files (.pdf)|.pdf": This is the default filter for PDF files that matches any file with a ".pdf" extension.
  • "ABC PDF files (ABC*.pdf)|ABC*.pdf": This is the custom filter that matches any file with a name that starts with "ABC" and has a ".pdf" extension.

When the user selects the custom filter in the OpenFileDialog, only files that match the specified pattern will be displayed in the dialog.

Note that the filter string must follow a specific format, where the first part of each filter must be a description of the filter enclosed in parentheses, followed by the pipe character '|', followed by the file extension pattern. You can specify multiple filters by separating them with the pipe character '|'.

Examples

  1. "C# OpenFileDialog custom file filter example"

    • Description: Learn how to implement a custom file filter in C# for OpenFileDialog, such as 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf|All files (*.*)|*.*"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  2. "C# OpenFileDialog custom filter with multiple extensions"

    • Description: Understand how to create a custom file filter with multiple extensions, like 'ABC*.pdf' and 'XYZ*.txt'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf|XYZ Text files|XYZ*.txt|All files (*.*)|*.*"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  3. "C# OpenFileDialog custom filter for specific files"

    • Description: Implement a custom file filter in C# for OpenFileDialog to only display specific files, like 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  4. "C# OpenFileDialog filter with wildcard character"

    • Description: Explore how to use wildcard characters in a custom file filter for OpenFileDialog in C#.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC files|ABC*.pdf;ABC*.txt|All files (*.*)|*.*"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  5. "C# OpenFileDialog filter with custom prefix"

    • Description: Learn how to implement a custom file filter in C# with a specific prefix, like 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf|All files (*.*)|*.*"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  6. "C# OpenFileDialog filter for files starting with"

    • Description: Understand how to filter files in OpenFileDialog for those starting with a specific pattern, like 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf|All files (*.*)|*.*"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  7. "C# OpenFileDialog custom filter case-insensitive"

    • Description: Implement a case-insensitive custom file filter in C# for OpenFileDialog, such as 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf|All files (*.*)|*.*"; openFileDialog.FilterIndex = 1; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  8. "C# OpenFileDialog filter for specific file types"

    • Description: Learn how to filter specific file types using a custom file filter in OpenFileDialog, like 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "PDF files|*.pdf|Text files|*.txt|All files (*.*)|*.*"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  9. "C# OpenFileDialog custom filter for specific directory"

    • Description: Explore how to create a custom file filter in C# for OpenFileDialog that filters files from a specific directory, like 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.IO; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf"; openFileDialog.InitialDirectory = "path/to/your/directory"; if (openFileDialog.ShowDialog() == true) { string selectedFilePath = openFileDialog.FileName; MessageBox.Show($"Selected file: {selectedFilePath}"); } } }

  10. "C# OpenFileDialog filter for files in subdirectories"

    • Description: Learn how to filter files in subdirectories using a custom file filter in C# for OpenFileDialog, like 'ABC*.pdf'.
    • Code:
      using Microsoft.Win32; using System; using System.Windows; class Program { static void Main() { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "ABC PDF files|ABC*.pdf"; openFileDialog.Multiselect = true; openFileDialog.Title = "Select Files"; if (openFileDialog.ShowDialog() == true) { string[] selectedFilePaths = openFileDialog.FileNames; MessageBox.Show($"Selected files: {string.Join(", ", selectedFilePaths)}"); } } }

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