<asp:RegularExpressionValidator ID="revWebsite" runat="server" ForeColor="Red"
ControlToValidate="txtWebsite" ErrorMessage="Invalid Website (General Details)"
ValidationExpression="(http|https)://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?">*
</asp:RegularExpressionValidator>
why not working for ? :
www.website.com
www.domain.website.com
http://website.com
https://website.com
Suggestion: if you want to validate a site a you can check its existence by pining it.
you can use custom validator for that. for that see the below example:
in the .aspx page:
<div>
<asp:TextBox runat="server" ID="txtURL" ValidationGroup="vlg" />
<asp:RequiredFieldValidator ID="rqfvURL" ErrorMessage="Please Enter" ControlToValidate="txtURL" ValidationGroup="vlg"
runat="server" />
<asp:CustomValidator ID="cstmValURL" ErrorMessage="Please enter valid site"
ControlToValidate="txtURL" runat="server" ValidationGroup="vlg"
onservervalidate="cstmValURL_ServerValidate" />
<asp:Button Text="submit" ID="btn" runat="server" onclick="btn_Click" ValidationGroup="vlg" />
</ div>
in the .cs page:
protected void cstmValURL_ServerValidate(object source, ServerValidateEventArgs args)
{
if (TestSite())
{
args.IsValid = true;
}
else
{
args.IsValid = false;
}
}
private bool TestSite()
{
Ping objPing = new Ping();
bool blnResult = false;
try
{
PingReply pngReply = objPing.Send(txtURL.Text.Trim(), 3000);
if (pngReply.Status == IPStatus.Success)
return blnResult= true;
}
catch
{
return blnResult=false;
}
return blnResult;
}
P.S. This is just a suggestion.
Related
So i'm a newbie in asp.net. I have this college project which need to use update function. I made the update function, its work fine for all columns except for picture's column. Its not updating picture database, and show the previous picture in the gridview. The pictures in the folder already updated but the gridview just show the previous picture (not the updated one). I need your help please thank you :)
this is the gridview aspx code, if update button was clicked, it will redirect to another page.
<div>
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField HeaderText="Images" ItemStyle-Height="50px" ItemStyle-Width="50px" >
<ItemTemplate>
<asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("pic") %>'/>/>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="nama" HeaderText="nama" />
<asp:BoundField DataField="harga" HeaderText="harga" />
<asp:BoundField DataField="stok" HeaderText="stok" />
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="btnUpdate" runat="server" OnClick="btnUpdate_Click" Text="Update" wID='<%# Eval("Id") %>'/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
this is the Page_Load function
public List<Table> getAll()
{
List<Table> watches = (from x in de.Tables select x).ToList();
return watches;
}
public void loadData()
{
GridView1.DataSource = repo.getAll();
GridView1.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack) loadData();
}
and redirected to update aspx
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<br />
<asp:FileUpload ID="pic" runat="server" />
<br />
<asp:TextBox ID="name" runat="server"></asp:TextBox>
<br />
<asp:TextBox ID="price" runat="server"></asp:TextBox>
<br />
<asp:TextBox ID="stok" runat="server"></asp:TextBox>
<br />
<asp:Button ID="btnUpdate" runat="server" Text="Button" OnClick="btnUpdate_Click" />
This is the update function of btnUpdate in update aspx
protected void btnUpdate_Click(object sender, EventArgs e)
{
string ext = System.IO.Path.GetExtension(pic.FileName);
string nama = name.Text;
int harga = Int32.Parse(price.Text);
int stock = Int32.Parse(stok.Text);
Table update = (Table)Session["updateWatch"];
string pict = "..\\Pictures\\Watch Pictures\\" + update.Id + ext;
bool updateStatus = repo.update(update.Id, pict, nama, harga, stock);
if (updateStatus == false) Label1.Text = "fail";
else
{
string subPic = update.pic.Substring(3);
string path = Server.MapPath("~") + subPic;
string savepath = Server.MapPath("~/Pictures/Watch Pictures/");
System.IO.File.Delete(path);
pic.SaveAs(savepath + update.Id + ext);
Response.Redirect("WebForm1.aspx");
}
}
this is the update function in repository
public bool update(int id, string pic, string nama, int harga, int stok)
{
Table updateW = (from x in de.Tables where x.Id == id select x).FirstOrDefault();
updateW.pic = pic;
updateW.nama = nama;
updateW.harga = harga;
updateW.stok = stok;
de.SaveChanges();
if (updateW == null) return false;
return true;
}
this is the code for gridview datasource
public List<Table> getAll()
{
List<Table> watches = (from x in de.Tables select x).ToList();
return watches;
}
I have made a form in which there are two RAD DateTimePicker Controls . One is for Start-DateTime and other is for End Date Time. Inside Custom Validator, I have Compared the Date Time Picked So far and hence made it valid or invalid accordingly its Server Validate event code goes like this.
protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args) {
if (rdpEndDate.SelectedDate < rdpStartDate.SelectedDate) {
args.IsValid = false;
} else {
args.IsValid = true;
}
}
Its Design Code goes like this.
<telerik:RadDateTimePicker ID="rdpStartDate" runat="server" AutoPostBackControl="Both" onselecteddatechanged="rdpStartDate_SelectedDateChanged">
<TimeView CellSpacing="-1" Culture="en-IN">
</TimeView>
<TimePopupButton HoverImageUrl="" ImageUrl="" />
<Calendar UseColumnHeadersAsSelectors="False" UseRowHeadersAsSelectors="False" ViewSelectorText="x">
</Calendar>
<DateInput AutoPostBack="True" DateFormat="dd-MM-yyyy" DisplayDateFormat="dd-MM-yyyy">
</DateInput>
<DatePopupButton HoverImageUrl="" ImageUrl="" />
</telerik:RadDateTimePicker>
<asp:Label ID="Label2" runat="server" Text=" To" CssClass="h_text"></asp:Label>
<telerik:RadDateTimePicker ID="rdpEndDate" runat="server" onselecteddatechanged="rdpEndDate_SelectedDateChanged" AutoPostBackControl="Both">
<TimeView CellSpacing="-1" Culture="en-IN"></TimeView>
<TimePopupButton ImageUrl="" HoverImageUrl=""></TimePopupButton>
<Calendar UseRowHeadersAsSelectors="False" UseColumnHeadersAsSelectors="False" ViewSelectorText="x"></Calendar>
<DateInput DisplayDateFormat="dd-MM-yyyy" DateFormat="dd-MM-yyyy" AutoPostBack="True"></DateInput>
<DatePopupButton ImageUrl="" HoverImageUrl=""></DatePopupButton>
</telerik:RadDateTimePicker>
Validator Source Code in designer is like this.
<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="rdpEndDate"
ErrorMessage="End Date Cant be Before Start Date"
OnServerValidate="CustomValidator1_ServerValidate" SetFocusOnError="True"
ValidateEmptyText="True" ValidationGroup="submit">End Date Cant be Before Start Date</asp:CustomValidator>
I want to ask that even when custom validator fails, My form gets submitted with faulty values. What can be the reason? How can I avoid that?
With Server validator Event like:
protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args) {
if (rdpEndDate.SelectedDate < rdpStartDate.SelectedDate) {
args.IsValid = false;
} else {
args.IsValid = true;
}
}
You have to check on your server event as well like:(For example if you are using your validator with button click then)
protected void btn_OnClick(object sender, EventArgs e)
{
if (Page.IsValid)
{
Response.Write("Page is valid.");
}
else
{
Response.Write("Page is not valid!");
}
}
My suggestion: Telerik has a good client side support as well so I suggest you to use client side validation of custom validator.
<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="rdpEndDate"
ErrorMessage="End Date Cant be Before Start Date"
ClientValidationFunction="CheckDates"
SetFocusOnError="True"
ValidateEmptyText="True" ValidationGroup="submit">End Date Cant be Before Start Date</asp:CustomValidator>
then in Javascript:
function CheckDates(sender, args)
{
var cltRdpEndDate= $find("<%=rdpEndDate.ClientID %>");
var cltRdpStartDate= $find("<%=rdpStartDate.ClientID %>");
if(cltRdpEndDate.get_dateInput().get_selectedDate()< cltRdpStartDate.get_dateInput().get_selectedDate())//if your condtion fails here
{
args.IsValid = false;
return;
}
args.IsValid = true;
}
I wanted to disable asp.net validation server controls from browser. I checked online but did not find any way to disable the server side validation; it can be disabled only on the client side using JS/jQuery.
Here is the scenario: I have a checkbox and selecting which displays a set of text boxes. Only if the checkbox is checked, required field validator should fire for the text boxes. I don't want to call a postback on checkbox. Actually those chceck boxes will be generated with jQuery templating so postback is not an option to enable disable validtion.
I would like to know whether there is any way we can enable disable the .CausesValidation property for the controls from browser using some setting? Or is there a way to capture the controls which are to be considered for validation slectively in some event before page_load?
[Update]
Based on Accepted answer, here is my solution:
<form id="form1" runat="server">
<div>
<asp:TextBox ID="textbox1" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="req1" ControlToValidate="textbox1" runat="server"
ErrorMessage="enter text"></asp:RequiredFieldValidator>
<asp:TextBox ID="textbox2" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="req2" ControlToValidate="textbox2" runat="server"
ErrorMessage="enter text for 2"></asp:RequiredFieldValidator>
<asp:CheckBox ID="check1" runat="server" Text="choose" />
<asp:Button ID="submitBtn" runat="server" OnClick="submitBtn_Click" Text="submit" />
<asp:CustomValidator ID="cvBox" runat="server" ErrorMessage="Error" ValidationGroup="prueba"
OnServerValidate="Validarcaja"></asp:CustomValidator>
<asp:ValidationSummary ID="summary" runat="server" />
</div>
</form>
protected void Page_Load(object sender, EventArgs e)
{
req1.Enabled = false;
req2.Enabled = false;
}
protected void submitBtn_Click(object sender, EventArgs e)
{
if (Page.IsPostBack)
{
Page.Validate();
if (Page.IsValid)
{
Response.Write("valid form");
}
else
{
Response.Write("invalid form");
}
}
}
protected void Validarcaja(object source, ServerValidateEventArgs args)
{
if (check1.Checked)
{
req1.Enabled = true;
req1.Validate();
}
}
The solution for me would be to use a CustomValidator with a OnServerValidate method.
In the OnServerValidate method I would check if the checkbox is checked, in that case I would verify if the textboxes are filled. It is not necessary to do any change in the CausesValidation property.
The only condition is not to include the property "ControlToValidate". A CustomValidator does not fire if the textbox is empty that's why.
So the code would be like this:
<asp:ValidationSummary ID="vs" runat="server" ValidationGroup="prueba" />
<asp:CheckBox ID="chb" runat="server" Text="Check" />
<asp:TextBox ID="txbBox" runat="server"></asp:TextBox>
<asp:CustomValidator ID="cvBox" runat="server" ErrorMessage="Error" ValidationGroup="prueba"
OnServerValidate="Validarcaja"></asp:CustomValidator>
<asp:Button ID="btn" runat="server" Text="Prueba" />
And the codebehind:
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
Page.Validate();
}
}
protected void Validarcaja(object source, ServerValidateEventArgs args)
{
if (chb.Checked)
{
if (txbBox.Text == String.Empty)
{
cvBox.IsValid = false;
}
}
}
I am experiencing a problem with an ASPX page not executing a CustomValidator. The Page consists of 3 ASP Panels which swap visibility for each step in a 3 step process. The first step/panel functions as expected, executing all CustomValidators when I click the submit button. If valid, the button click hides its panel and shows the second panel for step #2 which contains another CustomValidator. When clicking the submit button on this second panel, the CustomValidator never executes and the Page always reports that it IsValid.
I have reproduced this behavior in a small, example app. Here is the relevant code...
Default.aspx
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2>
Welcome to ASP.NET!
</h2>
<p>
To learn more about ASP.NET visit www.asp.net.
</p>
<p>
You can also find <a href="http://go.microsoft.com/fwlink/?LinkID=152368&clcid=0x409"
title="MSDN ASP.NET Docs">documentation on ASP.NET at MSDN</a>.
</p>
<asp:Panel ID="Panel1" runat="server" Visible="true">
<div>
<asp:CustomValidator
ID="CustomValidator1"
runat="server"
ControlToValidate="TextBox1"
ValidateEmptyText="true"
Display="Dynamic"
OnServerValidate="CustomValidator1_ServerValidate">
</asp:CustomValidator>
</div>
<div>
<asp:Label ID="Label1" runat="server" Text="Type in anything:" AssociatedControlID="TextBox1" />
<asp:TextBox ID="TextBox1" runat="server" />
</div>
<div>
<asp:Button ID="Button1" runat="server" Text="Show Panel #2" OnClick="Button1_Click" />
</div>
</asp:Panel>
<asp:Panel ID="Panel2" runat="server" Visible="false">
<div>
<asp:CustomValidator
ID="CustomValidator2"
runat="server"
Display="Dynamic"
OnServerValidate="CustomValidator2_ServerValidate">
</asp:CustomValidator>
</div>
<div>
<asp:Button ID="Button2" runat="server" Text="I should cause an Exception..." OnClick="Button2_Click" />
</div>
</asp:Panel>
<asp:Panel ID="Panel3" runat="server" Visible="false">
<p>An exception should have been thrown. :(</p>
</asp:Panel>
</asp:Content>
Default.aspx.cs
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Panel1.Visible = true;
Panel2.Visible = false;
Panel3.Visible = false;
}
protected void Button1_Click(object sender, EventArgs e)
{
if (Page.IsValid)
{
Panel1.Visible = false;
Panel2.Visible = true;
Panel3.Visible = false;
}
}
protected void Button2_Click(object sender, EventArgs e)
{
if (Page.IsValid)
{
Panel1.Visible = false;
Panel2.Visible = false;
Panel3.Visible = true;
}
}
protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
string userEnteredText = TextBox1.Text;
if (string.IsNullOrEmpty(userEnteredText))
{
CustomValidator1.Text = "Text is required!";
args.IsValid = false;
}
else if (!userEnteredText.ToLower().Equals("anything"))
{
CustomValidator1.Text = "You didn't type 'anything'! ;)";
TextBox1.Text = null;
args.IsValid = false;
}
else
{
args.IsValid = true;
}
}
protected void CustomValidator2_ServerValidate(object source, ServerValidateEventArgs args)
{
throw new Exception("This ServerValidate() method never triggers!");
}
}
I don't understand why the CustomValidator2 method is never executing. Can anyone explain this behaviour?
As you're not setting the ControlToValidate property in your scenario set the property ValidateWhenEmpty to true on the CustomValidator.
The CustomValidator will not be evaluated when the ControlToValidate is blank unless ValidateWhenEmpty is true.
UPDATE:
Ok this was wrong. But do you really need to set visibility of the panels in the Page_Load? You've done it already declaratively in the .aspx.
If you remove it from Page_Load, the validator works. I suppose it does not work if the validator is Visible=false or is inside a containing control that is Visible=false.
You should use ValidationGroup property of the buttons and the corresponding validation controls in each panel.
I have a radiobuttonlist with two items, Yes or No. The radiobuttonlist control has a customvalidator that needs a servervalidation function and a javascript clientvalidationfunction. Could you help me? The function in this message works but only when i actually have choosen one of the two listitems, when no listitem is selected the validation skips my radiobuttonlist control.
function ValidateRadioButtonList(source, arguments) {
var RBL = document.getElementById(source.controltovalidate);
var radiobuttonlist = RBL.getElementsByTagName("input");
var counter = 0;
var atLeast = 1
for (var i = 0; i < radiobuttonlist.length; i++) {
if (radiobuttonlist[i].checked) {
counter++;
}
}
if (atLeast = counter) {
arguments.IsValid = true;
return arguments.IsValid;
}
arguments.IsValid = false;
return arguments.IsValid;
}
EDIT: Relevant code from comments
<asp:Button ID="btnSubmit" runat="server" Text="Submit" CssClass="btnNormal"
CausesValidation="True" />
<asp:CustomValidator runat="server"
ClientValidationFunction="ValidateRadioButtonList"
OnServerValidate="RadioButtonListServerValidation" ID="cvRadioButtonList"
Font-Bold="True" Font-Size="Medium" ErrorMessage="Business critical"
ControlToValidate="rblBusinessCritical">*</asp:CustomValidator>
<asp:RadioButtonList ID="rblBusinessCritical" runat="server" RepeatLayout="Flow"
RepeatDirection="Horizontal" TabIndex="4">
<asp:ListItem Text="Yes" Value="1" />
<asp:ListItem Text="No" Value="0" />
</asp:RadioButtonList>
Code Behind:
Public Sub RadioButtonListServerValidation(ByVal sender As Object, _
ByVal args As ServerValidateEventArgs)
If rblBusinessCritical.SelectedValue = "-1" Then
args.IsValid = False
cvRadioButtonList.ErrorMessage = "Business critical needed"
Exit Sub
Else
args.IsValid = True
End If
End Sub
Have you set the ValidateEmptyText Property of the CustomValidator to true?
edit:
Have you set the CausesValidation Property of your Submit-Button/RadioButtonList to true?
Please provide some code from your aspx-page.
Here is another javascript clientvalidation function i have tried:
function ValidateRadioButtonList(source, arguments) {
var RBL = document.getElementById(source.controltovalidate);
var radio = RBL.getElementsByTagName("input");
var isChecked = false;
for (var i = 0; i < radio.length; i++) {
if (radio[i].checked) {
isChecked = true;
break;
}
}
if (!isChecked) {
alert("Please select an item");
arguments.IsValid = false;
}
arguments.IsValid = true;
}
Do you need to use client-side?
Here is a server-side solution...
<asp:RadioButtonList id="radTerms" runat="server">
<asp:listitem id="optDisagree" runat="server" value="Disagree" selected="true">I don't agree</asp:ListItem>
<asp:listitem id="optAgree" runat="server" value="Agree">I agree</asp:ListItem>
</asp:RadioButtonList>
<asp:CustomValidator Display="Dynamic" ErrorMessage="You have to agree to the terms and conditions" ID="cmpTerms" ControlToValidate="radTerms" SetFocusOnError="true" runat="server" OnServerValidate="cmpTermsAccepted_ServerValidate">*</asp:CustomValidator>
CodeBehind:
protected void cmpTermsAccepted_ServerValidate(Object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
{
args.IsValid = (args.Value == "Agree");
}
That should work. Trying taking the control to validate property off the customer validator.
<asp:RadioButtonList ID="LocationAccurateRBL" CssClass="radioButtonList" RepeatDirection="Horizontal" RepeatColumns="4" RepeatLayout="Flow" runat="server">
<asp:ListItem Text="Yes" Value="1" />
<asp:ListItem Text="No" Value="0" />
</asp:RadioButtonList>
<asp:CustomValidator runat="server" ID="CheckBoxRequired" EnableClientScript="true" ControlToValidate="LocationAccurateRBL"
ClientValidationFunction="LocationAccurate_ClientValidate" ValidateEmptyText="true"
Text="*" ForeColor="Red" ErrorMessage="Please let us know if the location is accurate" SetFocusOnError="true" ValidationGroup="CreateVG" />
And the script, is much shorter because of jquery. This will do what you want.
<script>
function LocationAccurate_ClientValidate(sender, e) {
e.IsValid = $("#<%=LocationAccurateRBL.ClientID%> > input").is(':checked');
}
</script>