之间添加空格
Data Source
con.ConnectionString = @"Data Source=.SQLEXPRESS; AttachDbFilename=c:folderSampleDatabase.mdf; Integrated Security=True; Connect Timeout=30; User Instance=True";
之间添加空格
Data Source
con.ConnectionString = @"Data Source=.SQLEXPRESS; AttachDbFilename=c:folderSampleDatabase.mdf; Integrated Security=True; Connect Timeout=30; User Instance=True";
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