c# - I'm not getting return value of stored procedure. var @id is not supplied.? -

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this sql server stored procedure insert data:

alter proc insert_stud1      @name varchar(20),     @mobile int,     @id int output begin      insert stud1 values (@name, @mobile)      set @id = @@identity; end

corresponding c#

cmd.commandtype = commandtype.storedprocedure;  cmd.parameters.add("@name",sqldbtype.varchar,20); cmd.parameters.add("@mobile",sqldbtype.int); var ret = cmd.parameters.add("@i", sqldbtype.int); cmd.parameters["@name"].value=textbox1.text; cmd.parameters["@mobile"].value=int.parse(textbox2.text);  cmd.commandtext="insert_stud1";  con.open(); cmd.executenonquery(); messagebox.show(ret.value.tostring()); con.close();

you send "@i" instead of "@id"


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