Replace the text of a textbox when the user makes a new input in the same textbox

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Replace the text of a textbox when the user makes a new input in the same textbox

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#1 by (1 votes)

-1

I have a textbox where, through another page I give you an email.

txtemail.text = "[email protected]"

And when my page does load , in that textbox it appears: [email protected] .

But if I try to make a new input on that textbox it does not save, always with [email protected] .

I have AutoPostBack="true" , I already tried OnTextChanged but I could not.

I needed something of the sort.

txtemail.text = txtemail.text.newInput()

This is my textbox

<div class="form-group">
<asp:Label ID="LEmailP" runat="server" Text="Para :" Font-Size="Medium" Font-Bold="true"></asp:Label>
<asp:TextBox CssClass="labelEmail" ID="txtEmailP" required="true" MaxLength="50" runat="server" type="text" TabIndex="2" AutoPostBack="true" pattern="[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$" title="ex: [email protected]" placeholder="Titular Email"></asp:TextBox>
</div>

I'm passing my email by page here (I put it in page load)

string email = Request.QueryString["email"]; txtEmailP.Text = email;

c# asp.net

asked by anonymous 27.09.2018 / 16:44

1 answer

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score 1 · Accepted Answer

Well you have not put your code, but given the behavior, you can say that you are assigning the value passed in QueryString to your input txtEmail in the Page_Load() event. And how do you assign the behavior of AutoPostBack="True" to it or any other component on the screen. Whenever this feature is activated you will pass Page_Load() again and you will receive the value you are informed in QueryString .

The solution is simple, add the condition so that this assignment only occurs when the page load does not come from a PostBack

protected void Page_Load(object sender, EventArgs e)
{
    if(!IsPostBack)
    {
        txtEmail.Text = Request.QueryString["email"];
    }

}