Comments by Mostafa Metwally (Top 36 by date)

i mean when i debuging

the compiler said that There is no row at position 0

se here

DataTable dt= cc.searchbyname(txtsearch.Text);

it's not empty

you should declare the parameters

Don't make it identety

It should be

Folder.second_form f = new Folder.second_form();
f.Show();
this.Hide();

yes yes you are right

i edited This Now

No this solution for textbox when it's null

But I want not to insert data for the same Id into database

sure i'll use it
i'll use tabbed window better

yes the tabbed window is the best choice

thank you Mr Sergey

someone said to me use Mdi
like..

form sell = new form();
form.MdiParent = this;
form.Dock = DockStyle.Fill;
form.Show();`

:(

thank you Mr.Jibesh

thank you Mr.Jibesh

yes you are right it's not a good idea to ask the user to enter coma separated value.

ok but now what i have to do

thank you Mr.Sergey

i'm writing a number in the textbox
like 10 , 20 , 55 ... etc
and then press button

i'm using Windows Forms and i want to make a salary form to the employee
yes it Executed under the debugger and the input string is textbox

I'm typing a number in the text box to Calculate the total salary

i understand that
thank you Mr.Sergey
i'll be carful

i tried what you say and same problem

my data comes from ui

Thank you Very Much :)

thank you Mr.pete for your answer

Many thanks to you Mr.zoltan for your answer

I Already Connected with Database

Collapse | Copy Code
class empreg:Adoconnection
{
SqlConnection con;
SqlCommand com;

public empreg()
{
con = new SqlConnection(GetConnection());
com = new SqlCommand();
}

Collapse | Copy Code
public string GetConnection()
{
return "data source=.;database=Msprogect;integrated security=true;";
}

I used ExecuteNonQuery();

and same problem :(

so that i'll use this

public int ExecuteNonquerycommand()
{
con.Open();
com.Connection = con;
int r=com.ExecuteNonQuery();
con.Close();
return r;

because it's a combobox and it will inseret into birthday column in database
so i used datatable because it's a selected value

was that right ?