Utility method to detect long string and targeted column that's causing exception "String or binary data would be truncated"

StringOrBindaryDataTruncated_Linqpad.cs

public static void FindLongStrings(object testObject)
{
	foreach (FieldInfo propInfo in testObject.GetType().GetFields())
	{
		foreach (ColumnAttribute attribute in propInfo.GetCustomAttributes(typeof(ColumnAttribute), true))
		{
			if (attribute.DbType.ToLower().Contains("varchar"))
			{
				string dbType = attribute.DbType.ToLower();
				int numberStartIndex = dbType.IndexOf("varchar(") + 8;
				int numberEndIndex = dbType.IndexOf(")", numberStartIndex);
				string lengthString = dbType.Substring(numberStartIndex, (numberEndIndex - numberStartIndex));
				int maxLength = 0;
				int.TryParse(lengthString, out maxLength);

				string currentValue = (string)propInfo.GetValue(testObject);

				if (!string.IsNullOrEmpty(currentValue) && maxLength != 0 && currentValue.Length > maxLength)
					Console.WriteLine(testObject.GetType().Name + "." + propInfo.Name + " " + currentValue + " Max: " + maxLength);
			}
		}
	}
}