Do until match instead of endofstream

Code:

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Dim xRead As StreamReader = New StreamReader(FilePath, System.Text.Encoding.Default)

Dim R As New Regex("""(.*)"",""" & MyTextbox.Text & "(.*)"",""(.*)"",.")
            'read the file
            Do Until xRead.EndOfStream
                For Each M As Match In R.Matches(xRead.ReadLine)
                    MexIDResultTB.Text = M.Groups(1).Value
                    CompanyNameTB.Text = M.Groups(3).Value
                Next
            Loop

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I need something like

Read the file line by line until a match is found then exit the loop

You actually have to do both. It wouldn't be wise to not include something to end when the end of the stream is found, even if you are reasonably certain that there will always be a match.

Therefore, what you need to do is signal the loop that it is time to end. For instance, you could add a boolean variable outside of the loop, and when a match is found, set the variable to True. The loop would then be until either the variable is True OrElse the end of stream is found.

Quote:

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Originally Posted by Shaggy Hiker

You actually have to do both. It wouldn't be wise to not include something to end when the end of the stream is found, even if you are reasonably certain that there will always be a match.

Therefore, what you need to do is signal the loop that it is time to end. For instance, you could add a boolean variable outside of the loop, and when a match is found, set the variable to True. The loop would then be until either the variable is True OrElse the end of stream is found.

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Hello, Shaggy, could you give me an example please!?