hiI used below code to display remainig character into label ltscript type34textjavascript34gt function var i 0 39idTxtmatn39keydownfunction e var ctrlKey 67 vKey 86 if ekeyCode ctrlKey ampamp ekeyCode vKey 39idLbltedaCh39htmltoPersianNumberthisvallength if thisvallength 70 0

How to maintain Data after Page PostBack and display in Label on Page Load using C# in ASP.Net

nedash

SOLVED CLOSED ACTIVE ANSWERED
User: nedash
Posted: on Apr 06, 2017 02:04 AM
Forum: ASP.Net Web Forms
Answer: 1
Views: 3402

I used below code to display remainig character into label:

 <script type="text/javascript">
        $(function () {
            var i = 0;
            $('[id*=Txtmatn]').keydown(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=LbltedaCh]').html(toPersianNumber($(this).val().length));
                    if ($(this).val().length % 70 == 0) {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(i);
                        $('.MessageCount').html(i);
                    }
                    else {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(parseInt(i));
                        $('.MessageCount').html(i);
                    }
                }
            });
            $('[id*=Txtmatn]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=LbltedaCh]').html(toPersianNumber($(this).val().length));
                    if ($(this).val().length % 70 == 0) {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(i);
                        $('.MessageCount').html(i);
                    }
                    else {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(parseInt(i));
                        $('.MessageCount').html(i);
                    }
 
                }
            });
            $("[id*=Txtmatn]").bind('paste', function (e) {
    debugger;
    setTimeout(function () {
        $('[id*=LbltedaCh]').html(toPersianNumber($("[id*=Txtmatn]").val().length));
        var msgCount = $("[id*=Txtmatn]").val().length / 70;
        msgCount = toPersianNumber(Math.floor(msgCount));
        $('.MessageCount').html(msgCount);
    }, 100);
});
        });
 
function toPersianNumber(input) {
    var inputstring = input;
    var persian = ["۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹"]
    for (var j = 0; j < persian.length; j++) {
        inputstring = inputstring.toString().replace(new RegExp(j, "g"), persian[j]);
    }
    return inputstring;
}
    </script>

it worked correctly and show number of characters into label...

I define linkbutton in page that code is:

 protected void LBaddNumber_Click(object sender, EventArgs e)
    {
        ViewUsersInfo();
        string numbers = string.Empty;
        foreach (GridViewRow row in GridView1.Rows)
        {
            numbers += (row.FindControl("LblNumber") as Label).Text.Trim() + Environment.NewLine;
        }
        TxtPhone.Text = numbers.Trim();
        CountMessage();
    }

it will add number from gridview into other textbox...

now problem is that when I type text into textbox(TxtSms) it will display number of characters into label like:

Number of character: 158

Message count:2

Now when I click on linkbutton to add number suddenly it delete number of characters and display like:

Number of character:

Message count:

it happen when I click every linkbutton or button in page(attention that in TxtSMS are text that I typed before clicking button) it just delete number of characters...

can you help me?

Best regards

neda

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AnandM

0 1

Reply
ANSWER
User: AnandM
Replied: on Apr 06, 2017 03:01 AM
Modified: on Apr 06, 2017 03:01 AM
Report

Hi nedash,

It is displaying nothing once you click any link button or button the page get postbacked and data stored in label gets cleared means label doesnt maintain the value after the page is postbacked thats you are the values get cleared and nothing displays so now for maintaining the value on the page postback you need take the HiddenField Element and assign the values of Message Count and Character Count and assign the hiddenfield values to the respective label and textboxes on pageload event.

I have created a sample which full fill your requirement you need to modify the code according to your need.

HTML

<div>    
    <asp:HiddenField ID="hfMessageCount" runat="server" />
    <asp:HiddenField ID="hfCharacterCount" runat="server" />
    <asp:HiddenField ID="hfTextBoxValue" runat="server" />
    <asp:TextBox ID="Txtmatn" runat="server" />
    <br />
    Character Count:-
    <asp:Label ID="LbltedaCh" runat="server" />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Number
    Of Messages:-
    <asp:Label ID="Lblsend" class="MessageCount" runat="server" />
    <asp:LinkButton ID="btnSubmit" Text="Submit" runat="server" />
</div>
<div>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            var i = 0;
            $('[id*=Txtmatn]').keydown(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=hfCharacterCount]').val(toPersianNumber($(this).val().length));
                    $('[id*=LbltedaCh]').html($('[id*=hfCharacterCount]').val());
                    $('[id*=hfTextBoxValue]').val($(this).val());
                    if ($(this).val().length % 70 == 0) {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(i);
                        $('[id*=hfMessageCount]').val(i);
                        $('.MessageCount').html($('[id*=hfMessageCount]').val());
                    }
                    else {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(parseInt(i));
                        $('[id*=hfMessageCount]').val(i);
                        $('.MessageCount').html($('[id*=hfMessageCount]').val());
                    }
                }
            });
            $('[id*=Txtmatn]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=hfCharacterCount]').val(toPersianNumber($(this).val().length));
                    $('[id*=LbltedaCh]').html($('[id*=hfCharacterCount]').val());
                    $('[id*=hfTextBoxValue]').val($(this).val());
                    if ($(this).val().length % 70 == 0) {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(i);
                        $('[id*=hfMessageCount]').val(i);
                        $('.MessageCount').html($('[id*=hfMessageCount]').val());
                    }
                    else {
                        i = $(this).val().length / 70;
                        i = toPersianNumber(parseInt(i));
                        $('[id*=hfMessageCount]').val(i);
                        $('.MessageCount').html($('[id*=hfMessageCount]').val());
                    }

                }
            });
            $("[id*=Txtmatn]").bind('paste', function (e) {
                setTimeout(function () {
                    $('[id*=hfCharacterCount]').val(toPersianNumber($("[id*=Txtmatn]").val().length));
                    $('[id*=LbltedaCh]').html($('[id*=hfCharacterCount]').val());
                    $('[id*=hfTextBoxValue]').val($("[id*=Txtmatn]").val());
                    var msgCount = $("[id*=Txtmatn]").val().length / 70;
                    msgCount = toPersianNumber(Math.floor(msgCount));
                    $('[id*=hfMessageCount]').val(msgCount);
                    $('.MessageCount').html($('[id*=hfMessageCount]').val());
                }, 100);
            });
        });

        function toPersianNumber(input) {
            var inputstring = input;
            var persian = ["۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹"]
            for (var j = 0; j < persian.length; j++) {
                inputstring = inputstring.toString().replace(new RegExp(j, "g"), persian[j]);
            }
            return inputstring;
        }       
    </script>
</div>

protected void Page_Load(object sender, EventArgs e)
{
    LbltedaCh.Text = hfCharacterCount.Value;
    Lblsend.Text = hfMessageCount.Value;
    Txtmatn.Text = hfTextBoxValue.Value;
}

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How to maintain Data after Page PostBack and display in Label on Page Load using C# in ASP.Net

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