I want to validate the email id in clients side, so that to prevent the postback of page to server, and every user should registered with email id... so i want to validate email id at client side.. i.e. should be check it is exist in the database or not.
View 1 RepliesIn this article u describe how to check
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But I want to Data retrive from data base in this way can u tell me using java script and query string
How to find that email already exixts using panels and validators...
View 1 RepliesIn addition to the process of regex syntax validation of Email Addresses entered by users, I'm trying to check if the entered email address is a real one and does exist?The best I could achieve is to "Ping" the host the email address is associated with. But there are some other terms in the industry like Handshaking with Email Server, etc.not necessarily with 100% confirmation accurary!
View 1 RepliesHow can I check if an email address actually exists?
I have a list of email addresses which I want to screen for dead email accounts (without sending an email msg with a hyperlink). Is there a web-service for this? Or C# code (which I prever instead of sending the data to someone else)?
I want to check the entered email id already exists in my database or not. For that I need the Text box lost focus event so that I can call it in update panel trigger asynchronously. whereas in my event I can check whether the entered value exists in database or not.
I tried:
txtEmailId.Attributes.Add("onblur", "javascript:CheckEmailIdIsExist()");
If so, the what should be inside CheckEmailIdIsExist() javascript method? how to check database values asynchronously from javascript function?
I'm trying to performa an ajax validation for e-mail address. I need to know if user is already registered so I need to check it in my database. There is similar example:
[code]....
My current code is:
[code]....
I want to develop the feature to check whether username is available in database using ASP.Net and SQL server ....
View 1 RepliesI have a asp:Button and asp:Textbox on Default.aspx page
Code is as below:
<asp:Button ID="Button1" runat="server" Text="Save" Width="80px" CommandName="Update"
OnClientClick="EnableDdlCompany();saveButtonClick();" CommandArgument="Save" OnClick="btnSave_Click"/>
<asp:TextBox ID="txtBarcodeNumber" runat="server" MaxLength="11" Width="230px"
Text='<%# Bind("BarcodeNo") %>' Display="None"
OnTextChanged="TextChanged" AutoPostBack="true"></asp:TextBox>
On button click, I want to call a javascript code to check that If the entered BarCode Number in Textbox already exist in Database, then show an alert "Number already exist" else allow user to save and navigate to Default2.aspx
I can able to do the same checking on TextBox OnTextChanged event using c# code, as below:
protected void TextChanged(object sender, EventArgs e) {
TextBox txtbarcode = fvIPRForm.FindControl("txtbarcodenumber") as TextBox;
if (txtbarcode.Text.Length > 0 && txtbarcode.Text.Length < 11) {
string error = "The Barcode Number " + txtbarcode.Text + " is invalid, the barcode length must be 11 character.";
ScriptManager.RegisterStartupScript(this, typeof(string), "Successful", "alert('" + error + "');", true);
[Code] ....
Here, IPRRequest is the class/.dll file name and IsValidBarcodeTest is a function defined in the class file
But same checking I tried using the c# code on button's OnClick="btnSave_Click" event, but dont know why this event is not firing, I guess due to CommandArgument on button, but I am not sure.
That's why I want to achieve it using Javascript.
I'm trying to error handle a registration aspx/c# page on my application and want to run a check whether the email address that a user has tried to register already exists as the email address is used as a primary key in my database.
I have tried IF NOT EXISTS/IF EXISTS but these dont give the desired effect so was wondering if there was another way around it?
Can we check that user entering an email id is really exists or in working???
View 1 RepliesIn the new user registration page, how to check whether the email id entered by a user is valid? I want to check the entered email id actually exists before the user submits his information. do not give code for checking email id string using regular expression, I want to check whether the entered email id actually exists.
View 5 RepliesI'm looking for an easy way to check an email address syntax. I don't need to check to see if it's a valid email, just the syntax.
View 7 RepliesI have a SQL database that creates a record for every document uploaded by the user to the server. I want to check this table before a user uploads a document to ensure they don't upload a file with name that already exists.
I know how to make the connection and make the SqlCommand to query the table for an existing record. But I don't know how to check the record count from the sqlCommand I made.
Does that make sense?
Using myConnectionCheck As New SqlConnection(myConnectionStringCheck)
Dim myCommandCheck As New SqlCommand()
myCommandCheck.Connection = myConnectionCheck
myCommandCheck.CommandText = "SELECT * FROM Req_Docs WHERE Doc_Name =" & DocName
myConnectionCheck.Open()
myCommandCheck.ExecuteNonQuery()
End Using
what is code of "user already exists in database" using asp.net 3.5
View 1 RepliesI am learning a tutorial, it is about saving mp3 files in database.
Have a look below picture i can upload a mp3 file multiple time with the same name how to avoid it?
[URL] ...
protected void btnUpload_Click(object sender, EventArgs e)
{
using (BinaryReader br = new BinaryReader(FileUpload1.PostedFile.InputStream))
{
byte[] bytes = br.ReadBytes((int)FileUpload1.PostedFile.InputStream.Length);
string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
[Code] .....
I need to check whether table named 'CSE' is existing in database or not. if it exists, i want to drop the table 'CSE'.
View 1 RepliesHow me can validate a email textbox to take only valid email address if error occur it show the error message in this textbox or as a tooltip. because in the form there is no space to show error message.
View 1 Replieshow do I grab an email address from a web form and email to that email address with the link to a webform?
View 5 RepliesI want to check if the record is already exists before insert using Ajax ActionLink in Create View. I am getting error 'Object reference not set to an instance of an object.' Here is a code in View :
<div class="editor-label">
<%= Html.LabelFor(model => model.PolicyId) %>
</div>
<div class="editor-field">
<%= Html.TextBoxFor(model => model.PolicyId) %>
<%= Html.ValidationMessageFor(model => model.PolicyId) %>
<em>can not be changed later.</em>
//error occurs here
<%= Ajax.ActionLink("Check", "CheckIfExists", "Life", new { PolicyId = Model.PolicyId }, null)%>
</div>
And Controller action :
public JavaScriptResult CheckIfExists(string PolicyId)
{
if (lifeRepository.IsExists(PolicyId))
return JavaScript("alert(' Already Exists');");
else
return JavaScript("alert(' Not Exists');");
}
i have a signup page and i want to check username exists or not with ajax
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="Simple.ascx.cs" Inherits="UserControls_Simple" %>
نام کاربری:
کلمه عبور
i eant to show label if user exists.how can i do that?
I have a form with x fields on - its a signup form on a web page. I use standard validation controls which I use for validating on both client and server side, however I have an additional requirement I don't think is covered by the standard controls. When a user enters an email address and press enter, I validate that the address is not already in the database, by calling a stored procedure. This works fine but it would be great to validate it client side as with all the other entry fields.
I wouldn't know where to start with javascript so I have come up with the following solution. I have put a ontextchanged event on the email textbox and set to autopostback. When the user navigates away from the textbox validation is called and this seems to work ok. My question is have I missed something, and is there an easier soluyion using validation controls or is this an appropriate solution to the problem?
I am hardly struggling with just ONE query in C# ( MS SQL).
When i do a select statement like:
string email = txtEmail.Text.ToString().Trim();
string selectSQL = "SELECT * FROM contacts WHERE email='" + email +"'";
I get the following message:
The multi-part identifier email@address.xxx could not be bound. This message shows up only on the email field, anything else is okay. I guess it has something todo with the '@' symbol on the email address in the DataBase?
i have task to send mail to all my clients in one click
i have no idea for that
i think for each loop will be useful ??
I am unsure how to go about my task. I need to get the email property from asp.net's profile class.
I am loading a formview based on username stored in an sql table. I want to get the email address from the users profile based on the matching username fields
In pseudo code:
Get profile.emailaddress where username.text = profile.username