flag in c# help

Question

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Hi,

I am using flag variable to identify add operation or update operation in the same button.
Depending on the flag value it will perform add or update.

But whenever I click a button in asp page, flag value will be reinitialized.
I have used in page load (!Page.Ispostback). Please help me out.

Thanks in advance.

C#

protected void Button1_Click(object sender, EventArgs e)
    {
        if (addupflag == 1)
        {
            Button1.Text = "Add";
            if ((TextBox1.Text == "") || (TextBox2.Text == ""))
            {
                Label4.Text = "User name and password can't be empty";
                TextBox1.Focus();
            }
            else
            {
                int cnt = ListBox1.Items.Count;
                dt1.Clear();
                dt1 = g1.Addusers(TextBox1.Text.ToString(), TextBox2.Text.ToString(), DropDownList1.SelectedValue);
                LoadAddresource(dt1);
                TextBox1.Text = "";
                TextBox2.Text = "";
                TextBox1.Focus();
            }
        }
        else
        {
            dt1.Clear();
            dt1 = g1.Upadteusers(TextBox1.Text.ToString(), TextBox2.Text.ToString(), DropDownList1.SelectedValue);
            LoadAddresource(dt1);
            Button2.Enabled = false;
            TextBox1.Text = "";
            TextBox2.Text = "";
            Button1.Text = "Add";
            addupflag = 1;
            TextBox1.Enabled = true;
        }
    }

this is the code after update its value should be 1 but it'l show "0"

Posted 21-Nov-10 22:18pm

shwetha_m6

Updated 21-Nov-10 22:32pm

Dalek Dave

v3

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Comments

Sandeep Mewara 22-Nov-10 4:25am

Post code. Until unless you don't put the code for it, it should not get reinitialized.

shwetha_m6 22-Nov-10 4:30am

[EDIT]

I moved the code to the main Question so as to get the Code Block Formatting.

Dalek Dave 22-Nov-10 4:31am

Edited for Readability.

3 solutions

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Sebastien T. · Answer 1 · 2010-11-21T22:20:00

Solution 1

You must save the flag value in session or in a hiddenfield.

Posted 21-Nov-10 22:20pm

Sebastien T.

Comments

shwetha_m6 22-Nov-10 4:22am

u mean to say in a public variable..? will u please tell me how to do that..!!

Sebastien T. 22-Nov-10 4:33am

no, in a asp page. You add <asp:HiddenField id="myFlag" value="1" runat="server" /> and in your .cs, you can have if myFlag.value == "1". A another solution is add your flag in the viewstate (http://msdn.microsoft.com/fr-fr/library/system.web.ui.control.viewstate%28VS.80%29.aspx)

You lost the value because in ASP.NET variable is destroyed after the page has done running.

shwetha_m6 22-Nov-10 5:05am

thanks dude.. i've used public static flag its workin fine now..

Abhinav S · Answer 2 · 2010-11-21T22:59:00

Solution 2

You could use the flag as part of the application state.

Posted 21-Nov-10 22:59pm

Abhinav S

Comments

shwetha_m6 22-Nov-10 7:03am

Sorry this i dint get..!!

@nuraGGupta@ · Answer 3 · 2010-11-21T23:06:00

Solution 3

Why dont you just declare the flag variable as a private global variable for the form, and initialize it value in the page load section under the
if(!Page.IsPostBack) property. This way, the flag will not be reinitialized on the calling of the button_click event. I hope you understand, what I am trying to tell.

Posted 21-Nov-10 23:06pm

@nuraGGupta@

Comments

shwetha_m6 22-Nov-10 7:03am

This doesn't work i've checked it..!