CODEWITHSUNDEEP
c#asp.netdrop-down-menutextbox
Đức Bùi
Đức Bùi

Reputation: 527

Textbox Value disapear when Dropdownlist index changed

I have a dropdownlist and a textbox which has TextMode is Password. Whenever dropdownlist index changed the value of textbox disappear. Anyone have a solution to fix this? Tks so much.

Update 

<asp:DropDownList ID="ddlstudentstatus" runat="server" AutoPostBack="True" 
                onselectedindexchanged="ddlStudentstatus_SelectedIndexChanged">
            </asp:DropDownList>

Upvotes: 0

Views: 2184

Answers (3)

Ammar Hamidou
Ammar Hamidou

Reputation: 205

if you wanna have the text inside the textbox untouched when postingback, use the following in page_load:

 if (IsPostBack)
    {
        if (!(String.IsNullOrEmpty(txtPassword.Text.Trim())))
        {
            txtPassword.Attributes["value"] = txtPassword.Text;
        }
    }

Upvotes: 3

Devraj Gadhavi
Devraj Gadhavi

Reputation: 3611

Changing autopostback value to false for the dropdown, would stop your SelectedIndexChanged event from firing. You can have a hiddenfield to store the value of the password textbox onblur, using javascript or jQuery.

$("#txtPassWord").blur(function()
    $("#hdnPassWord").val($("#txtPassWord").val());
});

And then in the SelectedIndexChange event of the dropdown, you can assign value to txtPassWord from hdnPassWord.

txtPassWord.Text = hdnPassWord.Value;

If you are not posting back on SelectedIndexChanged, there's no meaning wiring up the event on server side. So be clear, which way to go.

Upvotes: 1

Scottie
Scottie

Reputation: 11308

Posting as an answer:

My guess is that the dropdown change is causing a postback. Passwords do not persist through postbacks.

Upvotes: 2

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