DataAdapter.Update not updating - sql

Question

hey hope someone can help, going crazy :-)
doing a little program that gets dataset and updates it again, i have the following SQLclass. Dataset is traversing fine and values are changed but it dosnt commit to DB.
class SQLConnection
{
private string SQL_String;
private string strCON;
System.Data.SqlClient.SqlDataAdapter da_1;
public string Sql {
set { SQL_String = value; }
}
public string connection_string
{
set { strCON = value; }
}
public System.Data.DataSet Getconnection
{
get { return Getmydataset(); }
}
private System.Data.DataSet Getmydataset()
{
System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(strCON);
con.Open();
da_1 = new System.Data.SqlClient.SqlDataAdapter(SQL_String, con);
System.Data.DataSet dat_set = new System.Data.DataSet();
da_1.Fill(dat_set, "Table_Data_1");
return dat_set;
}
public void UpdateDatabase(System.Data.DataSet ds)
{
System.Data.SqlClient.SqlCommandBuilder cb = new System.Data.SqlClient.SqlCommandBuilder(da_1);
int test = cb.DataAdapter.Update(ds.Tables[0]);
}
}
}
When i call the class and try to do update the DataAdapter returns 0
static public void Main(string[] args)
{
GetClosedComputers();
}
getclosedcomputers
public static DataSet GetClosedComputers()
{
try
{
SQLConnection objConnect = new SQLConnection();
conString = Properties.Settings.Default.Connectionstring;
objConnect.connection_string = conString;
//call stored procedure
objConnect.Sql = Properties.Settings.Default.GetNextClosedComputers;
ds = objConnect.Getconnection;
ds.Tables[0].Columns["State"].Expression = "'1'";
objConnect.UpdateDatabase(ds);
}
catch (Exception e)
{
ErrorString = e.Message;
}
return ds;
}

Answer 1

Hmm seemed like i had to issues, first of i couldnt use an UpdateProcedure, which i not sure why and also the ".Expression" could be used, this solved it.
objConnect = new SQLConnection();
conString = Properties.Settings.Default.Connectionstring;
objConnect.connection_string = conString;
// use sql query instead of stored procedure!!!
objConnect.Sql = Properties.Settings.Default.Test;
//Dataset with all computers
ds = objConnect.Getconnection;
//DataSet results = StartStopVM.StartVirtualMachines(ds);
DataTable dt = ds.Tables[0];
//this didnt work
//ds.Tables[0].Columns["State"].Expression = "'1'";
//
foreach(DataRow dr in dt.Rows)
{
dr["State"] = 1;
}
objConnect.UpdateDatabase(ds);