EXPDOTNET: 2014

how to redirect visitor from one website to another website using java script

location.replace("http://www.xyz.com");

</script>

How to disable Right click on asp.net website page using JavaScript

var message = "";

function clickIE4() {

if (event.button == 2) {

alert(message);

return false;

} }

function clickNS4(e) {

if (document.layers || document.getElementById && !document.all) {

if (e.which == 2 || e.which == 3) {

alert(message);

return false;

} } }

if (document.layers) {

document.captureEvents(Event.MOUSEDOWN);

document.onmousedown = clickNS4;

}

else if (document.all && !document.getElementById) {

document.onmousedown = clickIE4;

}

document.oncontextmenu = new Function("return false")

</script>

How to Validate the number range using JavaScript in asp.net

function validateAge() {

var txtVal = document.getElementById("<%=txtAge.ClientID%>").value;

if (txtVal >= 18 && txtVal <= 25) {

return true;

}

else

alert('Age must be between 18-25');

return false;

}</script>

<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" OnClientClick="javascript:return validateAge();" />

Message box in asp.net website using JavaScript

1 - First Ways

protected void btnMsg_Click(object sender, EventArgs e)

{

ScriptManager.RegisterClientScriptBlock(Page, Page.GetType(), Guid.NewGuid().ToString(), "alert('Record saved Sucessfully');", true);

}

2- Second Ways

using System.Web.Script.Serialization;

protected void btnMsg_Click(object sender, EventArgs e)

{ var message = new JavaScriptSerializer().Serialize("Record saved successfully");

var script = string.Format("alert({0});", message);

ScriptManager.RegisterClientScriptBlock(Page, Page.GetType(), "", script, true);

}

Note: If you want to show message inside UpdatePanel then the above code will not work. Use the below code instead

ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Record saved successfully');", true);

Server Side Java Script – Pop Up

C#.Net Code to call java script function from code behind file in asp.net

protected void Page_Load(object sender, EventArgs e)
{
if (!ClientScript.IsStartupScriptRegistered("alert"))
{
Page.ClientScript.RegisterStartupScript(this.GetType(),
"alert", "Save Record Successfully”, true);
}
}

VB.Net Code to call java script function from code behind file in asp.net

If (Not ClientScript.IsStartupScriptRegistered("alert")) Then
Page.ClientScript.RegisterStartupScript _
(Me.GetType(), "alert", "MyFunction();", True)
End If

Required Field Validation In Dot Net

function validationCheck() {

var summary = "";

summary += isvaliduser();

summary += isvalidpassword();

summary += isvalidConfirmpassword();

summary += isvalidFirstname();

summary += isvalidLastname();

summary += isvalidEmail();

summary += isvalidphoneno();

summary += isvalidLocation();

if (summary != "") {

alert(summary);

return false;

}

else {

return true;

}

function isvaliduser() {

var id;

var temp = document.getElementById("<%=txtuser.ClientID %>");

id = temp.value;

if (id == "") {

return ("Please Enter User Name" + "\n");

}

else {

return "";

}

function isvalidpassword() {

var id;

var temp = document.getElementById("<%=txtpwd.ClientID %>");

id = temp.value;

if (id == "") {

return ("Please enter password" + "\n");

}

else {

return "";

}

function isvalidConfirmpassword() {

var uidpwd;

var uidcnmpwd;

var tempcnmpwd = document.getElementById("<%=txtcnmpwd.ClientID %>");

uidcnmpwd = tempcnmpwd.value;

var temppwd = document.getElementById("<%=txtpwd.ClientID %>");

uidpwd = temppwd.value;

if (uidcnmpwd == "" || uidcnmpwd != uidpwd) {

return ("Please check and re-enter password to confrim" + "\n");

}

else {

return "";

}

function isvalidFirstname() {

var id;

var temp = document.getElementById("<%=txtfname.ClientID %>");

id = temp.value;

if (id == "") {

return ("Please enter first name" + "\n");

}

else {

return "";

}

function isvalidLastname() {

var id;

var temp = document.getElementById("<%=txtlname.ClientID %>");

id = temp.value;

if (id == "") {

return ("Please enter last name" + "\n");

}

else {

return "";

}

function isvalidEmail() {

var id;

var temp = document.getElementById("<%=txtEmail.ClientID %>");

id = temp.value;

var re = /\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;

if (id == "") {

return ("Please Enter Email" + "\n");

}

else if (re.test(id)) {

return "";

}

else {

return ("Email should be in the form abc@xyz.com" + "\n");

}

function isvalidphoneno() {

var id;

var temp = document.getElementById("<%=txtphone.ClientID %>");

id = temp.value;

var re;

re = /^[0-9]+$/;

var digits = /\d(10)/;

if (id == "") {

return ("Please enter phone no" + "\n");

}

else if (re.test(id)) {

return "";

}

else {

return ("Phone no should be digits only" + "\n");

}

function isvalidLocation() {

var id;

var temp = document.getElementById("<%=txtlocation.ClientID %>");

id = temp.value;

if (id == "") {

return ("Please enter Location" + "\n");

}

else {

return "";

}

</script>

protected void Page_Load(object sender, EventArgs e)

{

btnsubmit.Attributes.Add("onclick", "javascript:return validationCheck()");

}

1-Javascript validation in dot net

function validate()

{

if (document.getElementById("<%=txtName.ClientID%>").value == "") {

alert("Name Feild can not be blank");

document.getElementById("<%=txtName.ClientID%>").focus();

return false;

}

if (document.getElementById("<%=txtEmail.ClientID %>").value == "") {

alert("Email id can not be blank");

document.getElementById("<%=txtEmail.ClientID %>").focus();

return false;

}

var emailPat = /^(\".*\"|[A-Za-z]\w*)@(\[\d{1,3}(\.\d{1,3}){3}]|[A-Za-z]\w*(\.[A-Za- \w*)+)$/;

var emailid = document.getElementById("<%=txtEmail.ClientID%>").value;

var matchArray = emailid.match(emailPat);

if (matchArray == null) {

alert("Your email address seems incorrect. Please try again.");

document.getElementById("<%=txtEmail.ClientID %>").focus();

return false;

}

if (document.getElementById("<%=txtWebUrl.ClientID %>").value == "") {

alert("Web URL can not be blank");

document.getElementById("<%=txtWebUrl.ClientID %>").value ="http://"

document.getElementById("<%=txtWebUrl.ClientID %>").focus();

return false;

}

var Url = "^[A-Za-z]+://[A-Za-z0-9-_]+\\.[A-Za-z0-9-_%&\?\/.=]+$"

var tempURL = document.getElementById("<%=txtWebUrl.ClientID%>").value;

var matchURL = tempURL.match(Url);

if (matchURL == null) {

alert("Web URL does not look valid");

document.getElementById("<%=txtWebUrl.ClientID %>").focus();

return false;

}

if (document.getElementById("<%=txtZip.ClientID%>").value == "") {

alert("Zip Code is not valid");

document.getElementById("<%=txtZip.ClientID%>").focus();

return false;

}

var digits = "0123456789";

var temp;

for (var i = 0; i < document.getElementById("<%=txtZip.ClientID>").value.length;i++) {

temp = document.getElementById("<%=txtZip.ClientID%>").value.substring(i, i + 1);

if (digits.indexOf(temp) == -1) {

alert("Please enter correct zip code");

document.getElementById("<%=txtZip.ClientID%>").focus();

return false;

}

} return true; }</script>

<asp:Button ID="btnsubmit" OnClientClick=" return validate()" runat="server"Text="Submit" />

1-Enable Disable Textboxes based on CheckBox using JavaScript

window.onload = function() {

var check = document.getElementById("<%=checkbox1.ClientID %>");

check.onchange = function() {

if (this.checked == true)

document.getElementById("<%=textbox1.ClientID %>").disabled = false;

else

document.getElementById("<%=textbox1.ClientID %>").disabled = true;

};

</script>

<asp:checkbox checked="false" id="checkbox1" runat="server" />

<asp:textbox id="textbox1" enabled="false" text="Test" runat="server" />

· How To Disable Textbox After Checkbox Checked In Datagridview/DataGrid(Edit Template /Template Field)

· <script language="javascript" type="text/javascript">

· function GetCheckStatus() {

· var srcControlId = event.srcElement.id;

· var targetControlId = event.srcElement.id.replace('chkThirdParty', 'txtThirdParty');

· if (document.getElementById(srcControlId).checked)

· document.getElementById(targetControlId).disabled = false;

· else

· document.getElementById(targetControlId).disabled = true;

· }

· </script>

· Used---

· <EditItemTemplate>

<asp:CheckBox id="chkThirdParty" runat="server" onclick="GetCheckStatus()" checked='<%# Iif(DataBinder.Eval(Container, "DataItem.IsThirdParty") Is System.DBNull.Value, false, DataBinder.Eval(Container, "DataItem.IsThirdParty")) %>'></asp:CheckBox>

<asp:TextBox id="txtThirdParty" runat="server" Width="130px" CssClass="inputbox" MaxLength="100" Text='<%# DataBinder.Eval(Container, "DataItem.ThirdPartyName") %>' ></asp:TextBox>

· </EditItemTemplate>

2- Text Box Only Numbers allow By JavaSript

function numeralsOnly(evt)

{

evt = (evt) ? evt : event;

var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0));

if (charCode > 31 && (charCode < 48 || charCode > 57) && (charCode != 46)) {

return false;

}

return true;

}

</script>

<asp:TextBox ID="txtRRate" runat="server" onkeypress="return numeralsOnly(event)" Width="30px" TabIndex="8" MaxLength="5"></asp:TextBox>

3- A Text Box Allow Only Numbers ( ,) (+) and (-) For Mobile Validate

var specialKey = new Array();

specialKey.push(8); //Backspace

specialKey.push(43); //+ Plus

specialKey.push(44); //,comma

specialKey.push(45); //- hyphen

function GeneralNumber(e) {

var keyCode = e.which ? e.which : e.keyCode

var General = ((keyCode >= 48 && keyCode <= 57) || specialKey.indexOf(keyCode) != -1);

return General;

}

</script>

<asp:TextBox ID="txtRPMContactNO" Width="150px" runat="server" MaxLength="50"TabIndex="25" onkeypress="return GeneralNumber(event);" ondrop="return false;"onpaste="return false;"></asp:TextBox>

4-A Text Box Allow Only Number and (:) Using Java script

var specialKeys = new Array();

specialKeys.push(8); //Backspace

specialKeys.push(58); //: Colon

function IsFTHTime(e) {

var keyCode = e.which ? e.which : e.keyCode

var FTH = ((keyCode >= 48 && keyCode <= 57) || specialKeys.indexOf(keyCode) != -1);

// document.getElementById("errorFTH").style.display = FTH ? "none" : "inline";

return FTH;

}

</script>

<asp:TextBox ID="txtFTH" Width="50px" runat="server" onkeypress="return IsFTHTime(event);"ondrop="return false;" onpaste="return false;" MaxLength="5"Style='text-align: right' TabIndex="10"></asp:TextBox>

5- A text Box Allow Only Dot (.) and Number And Return in Span

var specialKeys = new Array();

specialKeys.push(8); //Backspace

specialKeys.push(46); //. Dot

function IsNumeric(e) {

var keyCode = e.which ? e.which : e.keyCode

var ret = ((keyCode >= 48 && keyCode <= 57) || specialKeys.indexOf(keyCode) != -1);

document.getElementById("error").style.display = ret ? "none" :"inline";

return ret;

}

</script>

<span id="error" style="color: Red; display: none">* Only Digit are allowed as input. </span>

6-Stop multiline TextBox Character( Max Length )

// Keep user from entering more than maxLength characters

function textboxMultilineMaxNumberdoKeypress(control) {

maxLength = control.attributes["maxLength"].value;

value = control.value;

if (maxLength && value.length > maxLength - 1) {

event.returnValue = false;

maxLength = parseInt(maxLength);

}

// Cancel default behavior

function textboxMultilineMaxNumberdoBeforePaste(control) {

maxLength = control.attributes["maxLength"].value;

if (maxLength) {

event.returnValue = true;

}

// Cancel default behavior and create a new paste routine

function textboxMultilineMaxNumberdoPaste(control) {

maxLength = control.attributes["maxLength"].value;

value = control.value;

if (maxLength) {

event.returnValue = false;

maxLength = parseInt(maxLength);

var oTR = control.document.selection.createRange();

var iInsertLength = maxLength - value.length + oTR.text.length;

var sData = window.clipboardData.getData("Text").substr(0, iInsertLength);

oTR.text = sData;

}

</script>

<asp:TextBox ID="TextBox1" runat="server" Width="362px" TabIndex="15"Height="80px"

CssClass="noResize" Rows="4" TextMode="MultiLine" MaxLength="10"onbeforepaste="textboxMultilineMaxNumberdoBeforePaste(this);"

onkeypress="textboxMultilineMaxNumberdoKeypress(this);"onpaste="textboxMultilineMaxNumberdoPaste(this);"></asp:TextBo

Add Code Page Load Event-

txtDescription.Attributes.Add("maxLength", txtDescription.MaxLength.ToString());

Find Control Using Javascript

// To Find Controls using Javascript
    // To Find Gridview or Other Data Controls
        var datalist = document.getElementById("GdvPrice");

    // To Find Input Elements like Textbox
        var sp = datalist.getElementsByTagName("input");

    // To Find Elements Like Label
         var Label = datalist.getElementsByTagName("span");

    // To Find Elements Like DropDownList
         var wp = datalist.getElementsByTagName("select");

// To Find Controls using Javascript on click of linkbutton in gridview

    //Call The below function on clientclick event of linkbutton
    function Sunil(lnk)
         {
            var row = lnk.parentNode.parentNode;
            var rowIndex = row.rowIndex - 1;

    //To find label value
            var ProductId = row.cells[0].children[0].value;
            var ProductName = row.cells[1].getElementsByTagName("span")[0].innerHTML;

   //To find dropdownlist value
           var qty = row.cells[7].getElementsByTagName("select")[0];
           qty=qty.options[qty.selectedIndex].text;
      }

EXPDOTNET

Friday 30 May 2014

Some Javascript