Just a question. Im really
wondering why my sample database program wont update. It will say
that it has updated the actual database but when i double check, it
didnt. I am not using the command builder coz i want my own sql
codes. When I test using the query builder, i will see the data being
updated or added but when i use my own program, it really wont.
Actually i have this one sample database program that updates ok. I
just dont know why I cant do it again. Im really pissed off thinking
abt it the whole night.
I ommitted the INSERT and
DELETE commands since they dont work too. here is my program. PLS
HELP. 
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Data.SqlClient;
using
System.Drawing;
using
System.Text;
using
System.Windows.Forms;
namespace
test3_database
{
public
partial class
Form1 : Form
{
public
Form1()
{
InitializeComponent();
}
private
void Form1_Load(object
sender, EventArgs e)
{
da_conn.Fill(ds_addressbook1, "book1");
}
private
void
book1BindingNavigatorSaveItem_Click(object
sender, EventArgs e)
{
SqlCommand
sql_UPDATE = new SqlCommand(
"UPDATE
book1 SET "
+ "Name
= @.txtName, "
+ "Mobile
= @.txtMobile, "
+
"Landline = @.txtLandline, "
+ "Note
= @.txtNote"
+ "WHERE
"
+ "(Name
= @.OldName) AND "
+ "(Mobile
= @.OldMobile) AND "
+
"(Landline = @.OldLandline) AND "
+ "(Note
= @.OldNote)");
//
assigning connection
sql_UPDATE.Connection
= conn;
//
UPDATE parameters
sql_UPDATE.Parameters.Add("@.txtName",
SqlDbType.NChar, 30, "Name");
sql_UPDATE.Parameters.Add("@.txtMobile",
SqlDbType.NChar, 12, "Mobile");
sql_UPDATE.Parameters.Add("@.txtLandline",
SqlDbType.NChar, 12, "Landline");
sql_UPDATE.Parameters.Add("@.txtNote",
SqlDbType.NChar, 200, "Note");
sql_UPDATE.Parameters.Add("@.OldName",
SqlDbType.NChar, 30,
"Name").SourceVersion =
DataRowVersion.Original;
sql_UPDATE.Parameters.Add("@.OldMobile",
SqlDbType.NChar, 12,
"Mobile").SourceVersion =
DataRowVersion.Original;
sql_UPDATE.Parameters.Add("@.OldLandline",
SqlDbType.NChar, 12,
"Landline").SourceVersion =
DataRowVersion.Original;
sql_UPDATE.Parameters.Add("@.OldNote",
SqlDbType.NChar, 200,
"Note").SourceVersion =
DataRowVersion.Original;
//
assigning UPDATE command
da_conn.UpdateCommand
= sql_UPDATE;
//
update attempt
try
{
da_conn.Update(ds_addressbook1);
MessageBox.Show("update
ok!");
}
catch
{
MessageBox.Show("update
ERROR!");
}
}
}
}
what exactly is your result, a messagebox that displays "update ERROR!"? You should add error handling to capture the error returned by sql server.|||i get "update ok!" message. and i wonder why because when u check the databse it is not updated.thanks for the reply 
|||
Run profiler or debug to see what Update statement is fired againt the server, perhaps you have some condition why didn′t sort out the specified rows you wanted to update. It could be that 0 rows are being returned /getting updated but the Update is still valid and executed. Perhaps you have the chance to check the sql_update.Parameters["@.RowCount"].Value as well ?!
HTH, Jens Suessmeyer.
|||i set no condition to my proram. ill try your suggestion. thanks so muchhow do u run that profile? im sorry. im very new to visual studio and sqlserver. im just a student.|||
Look in this post,there are some walkthroughs:
http://groups.google.de/group/microsoft.public.sqlserver.tools/browse_frm/thread/cceb1ebec48370b
HTH, JensSuessmeyer.
|||SQL Express does not have Profiler. any alternative?thanks.|||first i thank God for what happened last night.
second to all of
you guys, thank you for all your inputs. i found the bug. it was
hiding. hehehe. all your inputs have helped me finding it.
again, THANK YOU GUYS:
cgraus
JocularJoe
Jay Hickerson MS
KraGiE
Greg Yvkoff
Jens Suessmeyer
