I need to insert a record to another table with the FK ID taken from another table. For example, the end user needs to create a unique product which is made up from various components from other tables.
Product Table Component1 Table Component2Table Component3Table
ProductID Comp1ID Comp2ID Comp3ID
Name Name Name Name
Comp1ID
Comp2ID
Comp3ID
I need to insert a row in to the Product table with the ID's taken from each component table. I am using a stored procedure which I know works OK when I run it through SQL Server Management Studio and I add the values manually but how do I get each combobox to pass the ID's back to the stored procedure.
Each combobox code loads data
privatevoid NewProduct_Load(object sender, EventArgs e) { connection.ConnectionString = "connection string"; command.CommandText = "SELECT * FROM Product;" + SELECT * FROM Component1; " +"SELECT * FROM Component2; " +"SELECT * FROM Component3;"; SqlDataAdapter adapter = new SqlDataAdapter(command); adapter.SelectCommand.Connection = connection; adapter.Fill(dSet); cbxComp1.DisplayMember = "Name"; cbxComp1.ValueMember = "Comp1ID"; cbxComp1.DataSource = dSet.Tables[0]; cbxComp1.Text = ""; cbxComp2.DisplayMember = "Name"; cbxComp2.ValueMember = "Comp2ID"; cbxComp2.DataSource = dSet.Tables[2]; cbxComp2.Text = "";
Each Parameter is set
insertCommand.Connection = connection;
insertCommand.CommandText = "proc_insertNewProduct";
insertCommand.CommandType = CommandType.StoredProcedure;
SqlParameter modParameter = new SqlParameter();
modParameter.ParameterName = "@Comp1ID";
modParameter.SqlDbType = SqlDbType.Int;
modParameter.Direction = ParameterDirection.Input;
modParameter.Value = cbxComp1.ValueMember;
SqlParameter tranParameter = new SqlParameter();
tranParameter.ParameterName = "@Comp2ID";
tranParameter.SqlDbType = SqlDbType.Int;
tranParameter.Direction = ParameterDirection.Input;
tranParameter.Value = cbxComp2.ValueMember;I get an error "Failed to convert parameter value from a String to a Int32" so it looks to me like I am passing the incorrect datatype back to the database????? My executeNonQuery statement is
if (connection.State == ConnectionState.Open)
{
int rows = command.ExecuteNonQuery();
if (rows > 0)
MessageBox.Show("blah blah");I am new to C# and very much experimenting with code, please help!