clear all cotrol values of a page

<script type="text/javascript">
    function allclear()
    {    //debugger
        var elements=document.getElementsByTagName("INPUT");
        for(i=0;i<elements.length;i++)
            if(elements[i].type=="radio")
                elements[i].checked=false;
        for(i=0;i<elements.length;i++)
            if(elements[i].type=="checkbox")
                elements[i].checked=false;
        for(i=0;i<elements.length;i++)
           if (elements[i].type=="text")
                elements[i].value="";
        var elements1=document.getElementsByTagName("SELECT");
        for(i=0;i<elements1.length;i++)
            if(elements1[i].id!="" && elements1[i].id!=null)
                elements1[i].selectedIndex=0;
     }
</script>
---------------------------------------------------------------------------------------
private void ClearControls(Control c)
    {
        if (c.GetType() == typeof(System.Web.UI.WebControls.TextBox))
            ((TextBox)c).Text = "";
        if (c.GetType() == typeof(System.Web.UI.WebControls.RadioButtonList))
        {
            RadioButtonList rbtl = (RadioButtonList)c;
            for (int j = 0; j < rbtl.Items.Count; j++)
                rbtl.Items[j].Selected = false;
        }
        if (c.GetType() == typeof(System.Web.UI.WebControls.DropDownList))
            ((DropDownList)c).SelectedIndex = 0;
        if (c.GetType() == typeof(System.Web.UI.WebControls.RadioButton))
            ((RadioButton)c).Checked = false;
        foreach (Control child in c.Controls)
            ClearControls(child);
}

------------------------------------------------------------------------------------------------------------------------

  private void DisableControls(Control c)
    {
        if ((c is TextBox) || (c is LinkButton) || (c is Button) || (c is CheckBox) || (c is CheckBoxList) || (c is RadioButtonList) || (c is DropDownList) || (c is Panel) || (c is ImageButton))
        {
            ((WebControl)c).Enabled = false;
        }
        foreach (Control child in c.Controls)
            DisableControls(child);
    }

javascript handlers

// Add handler using the getElementById method
$addHandler(Sys.UI.DomElement.getElementById("Button1"), "click", toggleCssClassMethod);
// Add handler using the shortcut to the getElementById method
$addHandler($get("Button2"), "click", removeCssClassMethod);

Email validation javascript

function emailCheck(str)
{
var at="@";
var dot=".";
var lat=str.indexOf(at);
var lstr=str.length;
var ldot=str.indexOf(dot);
if (str.indexOf(at)==-1)
    return false;
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
    return false;
if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
    return false;
if (str.indexOf(at,(lat+1))!=-1)
    return false;
if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
    return false;
if (str.indexOf(dot,(lat+2))==-1)
   return false;
if (str.indexOf(" ")!=-1)
   return false;
return true;
}

get web.config appsettings in javascript

var conn = '<%=ConfigurationManager.ConnectionStrings["MyConnString"].ConnectionString %>'
alert(conn);

var v1 = '<%=ConfigurationManager.AppSettings["var1"].ToString() %>'
var v1 = '<%=ConfigurationManager.AppSettings["var1"] %>'

<%$AppSettings:Title%>

alert(v1);

 

restrict textbox to allow only numerics

function numerics()
{
 key = String.fromCharCode(window.event.keyCode);
 if (!(key >= '0' && key <= '9'))   window.event.keyCode=0;
}
<asp:TextBox ID="txt1" Text=""  runat="server"  onkeypress=" return numerics();"></asp:TextBox>

function isAlpha(keyCode)
{
    return ((keyCode >= 65 && keyCode <= 90) || keyCode == 8||keyCode==37||keyCode==39||keyCode==9||keyCode==46)
}

function isNum(keyCode)
{
    return((keyCode < 105 && keyCode > 96)||(keyCode < 57 && keyCode > 48) || keyCode == 8||keyCode==37||keyCode==39||keyCode==9||keyCode==46)
}

<asp:TextBox ID="txtUserName" runat="server" onkeydown = "return isAlpha(event.keyCode);" onpaste =  "return false;" Width="130px"></asp:TextBox>

public static bool IsNumeric(String strVal)
    {
        Regex reg = new Regex("[^0-9-]");
        Regex reg2 = new Regex("^-[0-9]+$|^[0-9]+$");
        return (!reg.IsMatch(strVal) && reg2.IsMatch(strVal));
    }

check all checkboxes in a form

$(document).ready(function() {
            $('#chkAll').click(
             function() {
                 $("INPUT[type='checkbox']").attr('checked', $('#chkAll').is(':checked'));
             });
         });

checkbox list javascript validation

function valid()
    {   
       var chkBoxList = document.getElementById('<%=CheckBoxList11.ClientID %>');
        var chkBoxCount= chkBoxList.getElementsByTagName("input");
        var k=0;
        for(var i=0;i<chkBoxCount.length;i++)
        {
            if(chkBoxCount[i].checked)
            k++;
        }
        if(k==0)
        alert("select any item");
        return false;
    }

querystring n gv rows in javascript

query string in js: '<%=Request.QueryString["val"]%>';
--------------------------
gridrows in js: Totalrows = parseInt('<%= this.gv1.Rows.Count %>');
--------------------------
var rows = document.getElementById('gv').rows;
for(i=0;i <rows.length;i++)
{
   fd = rows[i].cells[4].innerText;
   rows[i].cells[4].style.display="none";
   rows[i].cells[8].style.display="none";
}

------------------------------------
<asp:Label ID="lblSno" runat="server" Text="<%# Container.DataItemIndex + 1%>"  />    ------------> to get the serial no for the gridview rows after bind the data (take the control to item template field of the grid)

validate checkbox list using javascript

function valid()
{
var chkBoxList = document.getElementById('CheckBoxList11');
var chkBoxCount= chkBoxList.getElementsByTagName("input");
var k=0;
for(var i=0;i<chkBoxCount.length;i++)
{
if(chkBoxCount[i].checked)
k++;
}
if(k==0)
alert("select any item");
return false;
}

add js functions in .cs file in simple

Literal li = new Literal();
li.Text = "alert('hello');";
Page.Controls.Add(li);
------------------------------------
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "", jsfunction(), true);

Page.RegisterStartupScript("new","<script>alert('this is alert');</script>");

Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('hai');", true);

Page.ClientScript.RegisterStartupScript(this.GetType(), "", jsfunction();, true);

Page.RegisterClientScriptBlock("a", "<script>jsfunction();</script>");

ScriptManager.RegisterClientScriptBlock(UpdatedatePanel1, this.GetType(), "Message", "Status(true);", true);

ScriptManager

.RegisterStartupScript(Page, Page.GetType(), Guid.NewGuid().ToString(), "$('#bd').attr('className', 'capse');", true);

Button.Attributes.Add("onclick", "return fnGet()");

for !ispostback:..

ClientScriptManager scm = this.ClientScript;
scm.RegisterStartupScript(this.GetType(), "onload", " __doPostBack('form1',null);setInterval(fncheck,10000);", true);
-------------------------------------
Response.Write("<script language="javascript">window.close();</script>");
Response.End();

check whether the given value is string or not

public static bool IsNumeric(String strVal)
{
Regex reg = new Regex("[^0-9-]");
Regex reg2 = new Regex("^-[0-9]+$|^[0-9]+$");
return (!reg.IsMatch(strVal) && reg2.IsMatch(strVal));
}
-----------------------------

isNaN(objnumber)

get datetime in user friendly (datetime convertion) in sqlserver

select convert (varchar(10), getdate(),101)
------------------------------------------
ddat = new Date();
ddat = new Date(ddat.setDate(new Date(stdate.value).getDate()+parseInt(days)));
var d=newdate.getDate();
var m=(newdate.getMonth()+1);
var y=newdate.getFullYear();
-----------------------------------------
day = new Date()
day = new Date("August15, 2006 08:25:00")
day = new Date(06,8,15)
day = new Date(06,8,15,8,25,0)

Ref: http://msdn.microsoft.com/en-us/library/ms187928.aspx with convertion chart

 

select convert(varchar, getdate(), 100) convertResult,100 style union
select convert(varchar, getdate(), 101),101 union
select convert(varchar, getdate(), 102),102 union
select convert(varchar, getdate(), 103),103 union
select convert(varchar, getdate(), 104),104 union
select convert(varchar, getdate(), 105),105 union
select convert(varchar, getdate(), 106),106 union
select convert(varchar, getdate(), 107),107 union
select convert(varchar, getdate(), 108),108 union
select convert(varchar, getdate(), 109),109 union
select convert(varchar, getdate(), 110),110 union
select convert(varchar, getdate(), 111),111 union
select convert(varchar, getdate(), 112),112 union
select convert(varchar, getdate(), 113),113 union
select convert(varchar, getdate(), 114),114  union
select convert(varchar, getdate(), 120),120  union
select convert(varchar, getdate(), 121),121  union
select convert(varchar, getdate(), 126),126  union
select convert(varchar, getdate(), 127),127  union
select convert(varchar, getdate(), 130),130  union
select convert(varchar, getdate(), 131),131
order by 2

 

convertResult	style
Mar 18 2016  5:27AM	100
3/18/2016	101
2016.03.18	102
18/03/2016	103
18.03.2016	104
18-03-2016	105
18-Mar-16	106
18-Mar-16	107
5:27:19	108
Mar 18 2016  5:27:19:257AM	109
3/18/2016	110
3/18/2016	111
20160318	112
18 Mar 2016 05:27:19:257	113
05:27:19:257	114
3/18/2016 5:27	120
27:19.3	121
2016-03-18T05:27:19.257	126
2016-03-18T05:27:19.257	127
9 ????? ??????? 1437  5:27:19	130
9/06/1437  5:27:19:257AM	131

 

get the ascii value as well as the typed value in alert

function getval()
{
var keyASCII = window.event.keyCode;
alert(keyASCII);
var keyValue = String.fromCharCode(keyASCII);
alert(keyValue);
}