How do I get the SqlDbType of a column in a table using ADO.NET?

Question

I\'m trying to determine at runtime what the SqlDbType of a sql server table column is.

is there a class that can do that in System.Data.SqlClient or should I do the

Answer 1

You can use enum System.Data.CommandBehavior as paramter for method SqlCommand.ExecuteReader(System.Data.CommandBehavior.KeyInfo):

SqlCommand cmd = connection.CreateCommand();
cmd.CommandText = "select column from table";
SqlDataReader reader = cmd.ExecuteReader(System.Data.CommandBehavior.KeyInfo);
SqlDbType type = (SqlDbType)(int)reader.GetSchemaTable().Rows[0]["ProviderType"];

This example looks like the example with using sql: SET FMTONLY ON; SET FMTONLY OFF. But you haven't to use SET FMTONLY. And in this case you don't
receive data from the table. You receive only metadata.