How to save files using SaveFileDialog in C#

Open Visual Studio, then click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "SaveFile" and then click OK

Drag and drop the RichTextBox, Button controls from Visual Toolbox onto your form designer, then design your form as below.

Add a SaveFileDialog, OpenFileDialog controls to your form, then add "Rich Text Format|*.rtf" to Filter property of SaveFileDialog, OpenFileDialog.

To handle the button click event in C#, you need to add an event handler method for the button’s Click event.

private void btnOpen_Click(object sender, EventArgs e)
{
    // c# read rtf file
    if (openFileDialog.ShowDialog() == DialogResult.OK)
        richTextBox.LoadFile(openFileDialog.FileName);
}

// c# file save dialog
private void btnSave_Click(object sender, EventArgs e)
{
    // using save file dialog c# save the content of the RichTextBox to file
    if (saveFileDialog.ShowDialog() == DialogResult.OK)
        // save a file c#
        richTextBox.SaveFile(saveFileDialog.FileName);
}

In this example:

• Use the RichTextBox.SaveFile method to save the contents to the selected file.
• The SaveFileDialog allows the user to select a file location and specify the file name for saving.
• The OpenFileDialog in C# is used to display a dialog that allows the user to select a file from the file system to open.
• The Filter property defines the types of files that can be saved (e.g., RTF or TXT files).

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