GO statements blowing up sql execution in .NET

As others mentioned, split your string by GO statements. But be careful, you may have the text "GO" in other parts of your script. You might also have whitespace before or after the GO statement, and you might have comments on the line after the GO statement also. Any of that would be valid in SSMS, so you may want to test for it.

Here is the method I use:

private static IEnumerable<string> SplitSqlStatements(string sqlScript)
{
    // Make line endings standard to match RegexOptions.Multiline
    sqlScript = Regex.Replace(sqlScript, @"(\r\n|\n\r|\n|\r)", "\n");

    // Split by "GO" statements
    var statements = Regex.Split(
            sqlScript,
            @"^[\t ]*GO[\t ]*\d*[\t ]*(?:--.*)?$",
            RegexOptions.Multiline |
            RegexOptions.IgnorePatternWhitespace |
            RegexOptions.IgnoreCase);

    // Remove empties, trim, and return
    return statements
        .Where(x => !string.IsNullOrWhiteSpace(x))
        .Select(x => x.Trim(' ', '\n'));
}