C# 2010 textbox and submit buttons

scampercat

In a C# 2010 desktop application, I would like to use the following code when
the user is selecting a file in a specified directory path:

            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
            dialog.InitialDirectory = "C:";
            dialog.Title = "Select a text file";
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                strPKGID = dialog.FileName;
            }

I would like to use the above code in the following situations:
1. When the text box containing the file location loses focus and
2. When a submit button on the form is clicked.

Would you show me code for losing focus on the textbox and clicking the submit button?

3 Replies

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Vulpes13y ago
Accepted answer
Sure, something like this which avoids repeating the code:

private void textBox1_Leave(object sender, System.EventArgs e)
{
GetTextFile();
}

private void btnSubmit_Click(object sender, System.EventArgs e)
{
GetTextFile();
}

private void GetTextFile()
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
dialog.InitialDirectory = "C:";
dialog.Title = "Select a text file";
if (dialog.ShowDialog() == DialogResult.OK)
{
strPKGID = dialog.FileName; // I assume strPKGID is a form-level variable
}
}
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scampercat13y ago
Could you show me the code on how to " put code into a separate method and call the method from the handlers."?
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Vulpes13y ago
In the Properties box for the textbox double click on the Leave event which will cause a 'skeleton eventhandler similar to this to be created:

private void textBox1_Leave(object sender, System.EventArgs e)
{

}

Do the same for the Click event of the submit button whose handler will look like this:

private void btnSubmit_Click(object sender, System.EventArgs e)
{

}

Now copy your code into these handlers or, alternatively, put it into a separate method and call the method from the handlers.
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