SQLException : String or binary data would be truncated

Question

I have a C# code which does lot of insert statements in a batch. While executing these statements, I got \"String or binary data would be truncated\" error and transaction r

Answer 1

Most of the answers here are to do the obvious check, that the length of the column as defined in the database isn't smaller than the data you are trying to pass into it.

Several times I have been bitten by going to SQL Management Studio, doing a quick:

sp_help 'mytable'

and be confused for a few minutes until I realize the column in question is an nvarchar, which means the length reported by sp_help is really double the real length supported because it's a double byte (unicode) datatype.

i.e. if sp_help reports nvarchar Length 40, you can store 20 characters max.