Question

Which one would be better in executing an insert statement for ms-sql database:

Sql DataAdapter or SQL Command
Object?

Which of them would be better, while inserting only one row and while inserting multiple rows?

A simple example of code usage:

SQL Command

string query = "insert into Table1(col1,col2,col3) values (@value1,@value2,@value3)";
int i;

SqlCommand cmd = new SqlCommand(query, connection);
// add parameters...
cmd.Parameters.Add("@value1",SqlDbType.VarChar).Value=txtBox1.Text;
cmd.Parameters.Add("@value2",SqlDbType.VarChar).Value=txtBox2.Text;
cmd.Parameters.Add("@value3",SqlDbType.VarChar).Value=txtBox3.Text;
cmd.con.open();
i = cmd.ExecuteNonQuery();
cmd.con.close();

SQL Data Adapter

DataRow dr = dsTab.Tables["Table1"].NewRow();
DataSet dsTab = new DataSet("Table1");
SqlDataAdapter adp = new SqlDataAdapter("Select * from Table1", connection);
adp.Fill(dsTab, "Table1");
dr["col1"] = txtBox1.Text;
dr["col2"] = txtBox5.Text;    
dr["col3"] = "text";

dsTab.Tables["Table1"].Rows.Add(dr);

SqlCommandBuilder projectBuilder = new SqlCommandBuilder(adp);
DataSet newSet = dsTab.GetChanges(DataRowState.Added);
adp.Update(newSet, "Table1");

Answer 1

Updating a data source is much easier using DataAdapters. It’s easier to make changes since you just have to modify the DataSet and call Update.

There is probably no (or very little) difference in the performance between using DataAdapters vs Commands. DataAdapters internally use Connection and Command objects and execute the Commands to perform the actions (such as Fill and Update) that you tell them to do, so it’s pretty much the same as using only Command objects.