How To Improve the Catch Exception in Visual Studio

{

str +=

{
str +=

{
str +=
}
}

}
catch (Exception ex)String str = "Error for backup " + ex.Message + Environment.NewLine;"StackTrace : " + ex.StackTrace + Environment.NewLine;if (ex.InnerException != null)"Inner1 : " + ex.InnerException.Message + Environment.NewLine;if (ex.InnerException.InnerException != null)"Inner2 : " + ex.InnerException.InnerException.Message + Environment.NewLine; MessageBox.Show(str);