如何通过C＃代码将长字符串存储在varchar（MAX）列中？

Question

All related subjects I saw in this site discuss stored procedures and alike. I have a C# program that receives a string (not important from where, maybe file or uploaded) and tries to insert it into a varchar(MAX) column. My code is like this:

command.Parameters.AddWithValue("@pxslt", mer.XsltTemplate);

It raised an error:

String or binary data would be truncated.

I changed it to:

command.Parameters.Add("@pxslt", SqlDbType.).Value = mer.XsltTemplate;

but still it raises the same error.

What is the solution? The size of my string is about 8100 characters.

Answer 1

You can use this syntax:

command.Parameters.Add("@pxslt", SqlDbType.VarChar, -1).Value = mer.XsltTemplate;

NB: -1 equates to (MAX).

Answer 2

I got it. The error raises because of another field. This was a field varchar(15) and the program tries to insert a string of 20 chars. I also noticed that varchar(max) works even without casting to DbType.