Increment page load counter

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Hi I've a javascript function that hides or shows a DIV section on my web form, on page load the section is hidden but if the user checks a checkbox the section is displayed. This form has a few address fields that allow the user to search on street, town, post code etc by clicking a button and displaying any options in a datagridview where a record can be selected from to populate the necessary address fields. The thing is when the search button is clicked my <DIV> section is being hidden even though the checkbox is checked. How do I increment my numInt once the button has been clicked?

Here's my javascript function:

JavaScript

// Check for INT value.
        var numInt = 1;
        function chckFrInt() {// Check to see if it's the first time.
            if (numInt == 1) {//  if it IS the first time
                hideDiv()
            }
        }

        function hideDiv() {
            document.getElementById("divVisiting").style.display = "none";
        }
    </script>
</head>
<body onload="javascript:chckFrInt()">
    <form id="frmServiceCallNew" runat="server">

I'm calling the javascript:chckFrInt function in the onload event. And the code behind one of the search buttons is:

ASP.NET

<tr valign="middle">
<td align="right"><asp:Label ID="lblVisitingPostCode" runat="server" CssClass="Label_Small_Bold" Text="Postcode / Town:"></asp:Label></td>
<td align="left"><asp:TextBox id="txtVisitingPostCode" runat="server" CssClass="Input_Text_Long" MaxLength="50"></asp:TextBox>
<asp:TextBox ID="txtVisitingTown" runat="server" CssClass="Input_Text_Long" MaxLength="50"></asp:TextBox></td>
<td align="left"><asp:Button ID="btnSearchVisitingAddress" runat="server" Text="Search Address" CssClass="Button_XSmall" OnClick="btnSearchVisitingAddress_Click" />
<asp:Button ID="btnClearVisitingAddress" runat="server" Text="Clear" CssClass="Button_XSmall" OnClick="btnClearVisitingAddress_Click" />
</td>
</tr>

and the c# code:

C#

protected void btnSearchAddress_Click(object sender, EventArgs e)
        {
            if (ServiceDB.getPostCodes(txtCustomerCountry.Text,
                                    txtCustomerStreet.Text,
                                    txtCustomerTown.Text,
                                    txtCustomerPostcode.Text)
                                    )
            {
                gvPostCodes.Visible = true;
                gvPostCodes.DataSource = ServiceDB.dsResults.Tables["tbl_PostCodes"];
                gvPostCodes.DataBind();
            }
        }

each time the page reloads numInt always = 1 therefore my

remains hidden even though the checkbox is checked.

Posted 7-Aug-12 2:12am

pmcm

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2 solutions

Solution 1

The reason why your numInt always equals one is because you are doing a full page postback when you click your button. When you do a full page postback the page is recreated, which means your javascript is being reset.

In your gvPostCodes set the Visible property to False, then in btnSearchAddress_Click set Visible equal to true (like you're doing); however, take out your javascript int the body element.

<body önload="javascript:chckFrInt()"> should just be <body></body>

Posted 7-Aug-12 7:00am

PopeDarren

Updated 7-Aug-12 7:01am

v2

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**Shelby Robertson** · Accepted Answer · 2012-08-07T07:03:00

Solution 2

Instead of checking a page counter, just check the checkbox directly to see if it is checked. Something like:

JavaScript

function chckFrInt() {
    if (document.getElementById("check1").checked) {
        hideDiv()
    }
}

Posted 7-Aug-12 7:03am

Shelby Robertson