how to retain text box values after postback in asp.net mvc

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how to get old values after submitting data in asp.net mvc
-----------------------------------------------------------------------
@using (Html.BeginForm("Index", "Home", FormMethod.Post))
{
<input type="text" id="txtNumber1" name="txtNumber1" />
<input type="text" id="txtNumber2" name="txtNumber2" />
<input type="submit" id="btnSubmit" value="Add" />
<input type="text" id="txtNumber3" name="txtNumber3" />
}
------------------------------------------------------------------------
[HttpGet]
[ActionName("Index")]
public ActionResult Index_Get()
{
return View();
}

[HttpPost]
[ActionName("Index")]
public ActionResult Index_Post()
{
string number1 = Request.Form["txtNumber1"];
string number2 = Request.Form["txtNumber2"];
string number3 = (int.Parse(number1) + int.Parse(number2)).ToString();
return View();
}

Posted 17-May-14 3:55am

Ranga Maddileti

Updated 22-May-21 14:45pm

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samultyagi · Answer 1 · 2014-09-05T06:29:00

i was also facing the same issue so here is the solution

HTML

<input type="text" id="txtNumber1" name="txtNumber1" value="@Request["txtNumber1"]"/>
<input type="text" id="txtNumber2" name="txtNumber2" value="@Request["txtNumber2"]"/>
<input type="submit" id="btnSubmit" value="Add" />
<input type="text" id="txtNumber3" name="txtNumber3" value="@Request["txtNumber3"]"/>

actually when you post form the values get submitted to the server and a new form loads up
so this simple syntax allot the value property simply
value = "@Request["name of the text input"]"

and so on you can do for other text inputs

DamithSL · Answer 2 · 2014-05-17T04:05:00

change

HTML

<input type="text" id="txtNumber1" name="txtNumber1" />
<input type="text" id="txtNumber2" name="txtNumber2" />
<input type="submit" id="btnSubmit" value="Add" />
<input type="text" id="txtNumber3" name="txtNumber3" />

to

HTML

@Html.TextBox("txtNumber1")
@Html.TextBox("txtNumber2")
@Html.TextBox("txtNumber3")
@Html.TextBox("txtNumber1")
<input type="submit" id="btnSubmit" value="Add" />

how to retain text box values after postback in asp.net mvc

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