I want to access the text written in AnonymousTemplate of LoginView Control through Code behind.
You convert your the Login to visible template, and you must see something like:
<asp:Login ID="Login1" runat="server" >
<LayoutTemplate>
<table border="0" cellpadding="1" cellspacing="0" >
<tr>
<td>
...
<asp:TextBox ID="UserName" runat="server"></asp:TextBox>
....
then on code behind you find your control as:
TextBox TheUserName = (TextBox)Login1.FindControl("UserName");
where you place the correct user id, of your control that you wish to grab and change.
Related
I am using an asp TextBox control with its TextChanged event and my goal is to capture text as a user enters it. If there are one or more characters entered, I would like a button control to be enabled without the user having to leave the TextBox control.
My source code for the TextBox on the aspx page is
<asp:TextBox ID="NewSpendingCategoryTextBox" MaxLength="12" runat="server"
AutoPostBack="True"
OnTextChanged="NewSpendingCategoryTextBox_TextChanged"
ViewStateMode="Enabled" >
</asp:TextBox>
and my source code on the code behind page is
Protected Sub NewSpendingCategoryTextBox_TextChanged(sender As Object, e As System.EventArgs) Handles NewSpendingCategoryTextBox.TextChanged
Dim strSpendingCategoryTextBox As String = Nothing
strSpendingCategoryTextBox = NewSpendingCategoryTextBox.Text
If strSpendingCategoryTextBox.Length <= 0 Then
Me.NewSpendingCategoryInsertButton.Enabled = False
Else 'strSpendingCategoryTextBox.Length > 0
Me.NewSpendingCategoryInsertButton.Enabled = True
End If 'strSpendingCategoryTextBox.Length <= 0
End Sub
So it appears I have to use javascript to enable or disable the insert button. Can someone guide me on how to get an element within a table? The table sits in a Panel as well.
below is the aspx code...
<asp:Panel ID="AddSpendingCategoryPanel" Visible="false" runat="server">
<table class="AddNewTable">
<tbody>
<tr>
<td>
<asp:Label ID="lblSpend" runat="server"
Text="Spending Category:">
</asp:Label>
</td>
<td>
<asp:TextBox ID="txtSpend" MaxLength="12"
runat="server"
AutoPostBack="True"
OnTextChanged="txtSpend_TextChanged"
OnKeyDown="return CheckSpendTextBoxValue()"
ViewStateMode="Enabled" >
</asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Button CssClass="frmbtn" ID="btnInsertSpend"
runat="server" Text="Insert" />
</td>
<td>
<asp:Button CssClass="frmbtn" ID="btnCancelSpend"
runat="server" Text="Cancel"
CausesValidation="False" />
</td>
</tr>
</tbody>
</table>
</asp:Panel>
Run this code in the OnKeyPress event or consider JavaScript. The textbox does not fire the Text_Changed event til Tab or Enter are used.
Simplify the boolean check.
Me.NewSpendingCategoryInsertButton.Enabled = (NewSpendingCategoryTextBox.Text.Length <> 0)
I'm not sure exactly how you would do it. But the ASP.NET code is executed on the server that is hosting the web page.
I'd highly recommended doing it on JavaScript which can be run client side. Hopefully this article is of use to you.
How to check if a textbox is empty using javascript
I have a page with FormView and a plain html table inside. The table serves for layout and contains child controls data-bind to SqlDataSource. My problem is that if I add runat=server attribute to the table declaration, all controls inside the table set my SQL parameters at NULL in DataSource_Updating event and thus the record gets updated with NULLs instead of actual values. If I don't add runat=server, everything works fine. Sample of my code:
<asp:FormView ID="SettingsFormView" runat="server" DataKeyNames="Id" DataSourceID="SettingsDataSource"
DefaultMode="Edit" Width="560px">
<EditItemTemplate>
<strong>Settings</strong>
<table runat="server" width="350px">
<tr>
<td width="160">
Time (sec)
<dx:ASPxSpinEdit ID="textTime" runat="server"
Height="21px" Number="0" Value='<%# Bind("Time") %>' Width="104px" />
<br />
</td>
<td>
</td>
</tr>
</table>
</EditItemTemplate>
</asp:FormView>
I want to be able to remove (set invisible) some rows in code behind, that's why I need to set runat=server. However I can't get anywhere with this because SQL record updates with NULLs. Please, advice what might be wrong in my code.
Try using this.
<!-- toggle through OnLoad (can use ID as well) -->
<asp:PlaceHolder runat="server" OnLoad="MakeVisibleOrNot">
<tr>
...
</tr>
</asp:PlaceHolder>
and in the code behind:
protected void MakeVisibleOrNot(object sender, EventArgs e)
{
((Control) sender).Visible = ConfigUtil.DisplaySummaryComment;
}
i have a login control and a create user control i my web page...i want the cursor to be in the user name text box of the login control when the page loads...how can i do that??
<asp:LoginView ID="LoginView1" runat="server">
<LoggedInTemplate>
Bingo..!!! Youuuuu did it...<asp:LoginName ID="LoginName1" runat="server" />.
</LoggedInTemplate>
<AnonymousTemplate>
<asp:DropShadowExtender ID="DropShadowExtender1" runat="server"
TargetControlID="Panel1"
Rounded="true"
Opacity=".38">
</asp:DropShadowExtender>
<asp:Panel ID="Panel1" runat="server"
BackColor="Silver">
<asp:Login ID="Login1" runat="server"
DestinationPageUrl="~/ViewCart_aspx/ViewCart.aspx"
Height="152px"
Width="396px"
RememberMeSet="True"
OnLoggedIn="ContinueButton_Click" >
<LayoutTemplate>
<fieldset>
<table border="0"
cellpadding="1"
cellspacing="0"
style="border-collapse:collapse;">
<tr>
<td>
<table border="0" cellpadding="0" style="height:152px;width:396px;">
<tr>
<td align="center" colspan="2">
<h3>Log In</h3> </td>
</tr>
<tr>
<td align="right">
<asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">User Name:</asp:Label>
</td>
<td>
<asp:TextBox ID="UserName" runat="server" Width="150px" TabIndex="0"></asp:TextBox>
<asp:RequiredFieldValidator ID="UserNameRequired" runat="server"
ControlToValidate="UserName" ErrorMessage="User Name is required."
ToolTip="User Name is required." ValidationGroup="ctl01$Login1">*</asp:RequiredFieldValidator>
</td>
</tr>
as u can see the UserName textbox is inside the login control..so i cannot access its property..how do i find the control??
EDIT: as you mentioned in comments, you want to set your login button to be clicked as a default button. For this you need to set this button as a default button.
Unfortunatelly, you didn't format you code properly as I asked in a comment to your question. So I assume the login button is located in the same name container as the username text box and its name is btnLogin and you could set this control as a default control with HtmlForm.DefaultButton property, so:
You could use Page.SetFocus for this. It sets the browser focus to the specified control:
Page.SetFocus(txtName);
If you want to reach your UserName textbox, you could use just:
var login1 = LoginView1.FindControl("Login1") as Login;
if (login1 != null)
{
var txtUserName = login1.FindControl("UserName");
if (txtUserName != null)
{
Page.SetFocus(txtUserName);
}
var btnLogin = login1.FindControl("btnLogin");
if (btnLogin != null)
{
Page.Form.DefaultButton = btnLogin.UniqueID;
}
}
But note:
For the LoginView control, when being
added onto a page, at a certain time,
only one Template (anonymous or
loggedIn ) is applied on the Control
instance, so at that time, we can only
retrieve the reference of those
controls in the active template( can't
access those in the non-active
template).
Write the code in Page load event like follows
textbox1.focus();
where ever it may be, by using the ID of the control you have to access the control in the code behind.
The DefaultFocus property seems to be suitable in this case:
// inside page_load, LoginUser is the Login control
Page.Form.DefaultFocus = LoginUser.FindControl("Username").ClientID;
Related question: Set focus to textbox in ASP.NET Login control on page load
I have an UpdatePanel that contains a Repeater. in the ItemTemplate of the repeater there is a button and a label.
When the button gets pressed, it performs some functionality, and then sets the label to visible and disables the button.
However none of the UI changes are being made to the webpage.
Here is the code, which when stepping through in debugger appears to work fine:
protected void CommentRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "report")
{
(e.Item.FindControl("btnReportComment") as ImageButton).Enabled = false;
Label thanksLabel = (Label)e.Item.FindControl("lblReportedComment");
thanksLabel.Visible = true;
}
pnlCommentsUpdater.Update();
}
and the page's code (excluding code outside of the repeater)
<asp:UpdatePanel UpdateMode="Conditional" ID="pnlCommentsUpdater" runat="server">
<ContentTemplate>
<asp:LinkButton ID="lnkPhoto1Comments" runat="server" Text="0 Comments" OnClick="lnkPhoto1Comments_Click" CssClass="dark-gray regular bold"></asp:LinkButton>
<asp:Panel ID="pnlPhoto1Comments" runat="server" Visible="False">
<asp:Repeater ID="Repeater1" runat="server" OnItemCommand="CommentRepeater_ItemCommand">
<ItemTemplate>
<br />
<hr width="100%" size="1" color="#CCCCCC" />
<table width="534" cellpadding="0" cellspacing="0" border="0">
<tr>
<td width="150" align="left" valign="top">
<span class="blue small bold"><%# Eval("PostedBy") %>,</span><br />
<span class="light-gray small bold"><%# Eval("DateCreated", "{0:g}") %></span>
</td>
<td width="20"></td>
<td width="252" align="left" valign="top">
<div STYLE="word-wrap:break-word;width:252px;left:0">
<span class="dark-gray small bold"><%# Eval("CommentText") %></span>
</div>
</td>
<td width="20"></td>
<td width="92" valign="bottom">
<asp:ImageButton ID="btnReportComment" runat="server" ImageUrl="../images/inappropriate_off.png" CssClass="domclickroll images/inappropriate_on.png images/inappropriate_on.png" AlternateText="Inappropriate" CommandName="report" CommandArgument='<%#Eval("CommentId") %>' /><br />
<asp:Label ID="lblReportedComment" runat="server" Visible="false" CssClass="Regular bold blue" Text="Thanks. We'll check it out!"></asp:Label>
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
As I said, the debugger shows it to be working fine, however it simply doesn ot show the label in the browser after clicking the button.
Anyone know what I'm doing wrong?
The error is: "Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled."
And I am calling
ScriptManager.GetCurrent(Page).RegisterPostBackControl(Repeater1);
in the page load, which I read in some sites is the solution, but it did not help.
Check out this blog post...
http://weblogs.asp.net/leftslipper/archive/2007/02/26/sys-webforms-pagerequestmanagerparsererrorexception-what-it-is-and-how-to-avoid-it.aspx
It contains a number of approaches to fixing this. With respect to your call...
ScriptManager.GetCurrent(Page).RegisterPostBackControl(Repeater1);
... I think you're supposed to pass the button to RegisterPostBackControl, and not the repeater. i.e pass it btnReportComment instead. From the reference above...
3.Call ScriptManager.RegisterPostBackControl()
and pass in the button in question.
This is the best solution for controls
that are added dynamically, such as
those inside a repeating template.
First step is to narrow down your problem. If you take out the UpdatePanel altogether, does it work OK?
Also, right off the bat I see that pnlPhoto1Comments.Visible is set to false... ? This is getting set correctly somewhere I suppose, otherwise you wouldn't even get the ItemCommand event. So probably not a problem.
I just posted one question and got it answered very quickly, thank you.
I have a new problem, being I have a asp label which gets text dynamically set on it during instanation and then I have a onmousedown function tied to it call a javascript function to enable a table area that sitting below that is display - none by default. It all works fine until I put two of these user controls on a page. They both have the specificed label text correct but the javascript enable seems to set the display style attribute of the first usercontrol's table to block instead of the one that is sitting below the label that was clicked. I am sure this is because the script is running on the client side (which I really would like to keep) and all the user controls have the same id name (since they are all instaniations of the same user control) so the javascript to set the style display attribute just gets the first table. I can't seem to think of a good way to either dynamically name the table on instationation so i can specify this "uniquie" id name to the javascript or any other way to do this work.
the user control asp code is below:
function enableDivArea(objName) {
document.getElementById(objName).style.display = "block";
}
function disableDivArea(objName) {
document.getElementById(objName).style.display = "none";
document.forms[0].submit();
}<asp:Label style="cursor:pointer;color:#EA9156;font-family:Arial,Helvetica,sans-serif;font-weight:bold;" ID="m_emailAddressLabel" onmousedown="enableDivArea('EmailFormDivArea');" runat="server" Text="someone#emailaddress.com"></asp:Label>
<table id="EmailFormDivArea" style="display:none; border-style: outset; border-width: thin">
<tr>
<td>To: <asp:Label ID="m_sendEmailToLabel" runat="server" Text=""></asp:Label></td>
<td align="right"><asp:Label onmousedown="disableDivArea('EmailFormDivArea');" id="m_closeLabel" runat="server" Text="close"></asp:Label></td>
</tr>
<tr>
<td><asp:Label ID="m_fromLabel" runat="server" Text="First Name:" Visible="True"></asp:Label></td>
<td><asp:TextBox ID="m_firstNameBox" runat="server" Visible="True"></asp:TextBox></td>
</tr>
<tr>
<td><asp:Label ID="Label1" runat="server" Text="Last Name:" Visible="True"></asp:Label></td>
<td><asp:TextBox ID="m_lastNameBox" runat="server" Visible="True"></asp:TextBox></td>
</tr>
<tr>
<td><asp:Label ID="Label2" runat="server" Text="E-mail:" Visible="True"></asp:Label></td>
<td><asp:TextBox ID="m_emailBox" runat="server" Visible="True"></asp:TextBox></td>
</tr>
<tr>
<td><asp:Label ID="Label3" runat="server" Text="Phone number:" Visible="True"></asp:Label></td>
<td><asp:TextBox ID="m_phoneNumberBox" runat="server" Visible="True"></asp:TextBox></td>
</tr>
<tr>
<td><asp:Label ID="Label4" runat="server" Text="Message:" Visible="True"></asp:Label></td>
<td><asp:TextBox ID="m_messageBox" runat="server" Visible="True" Rows="6" TextMode="MultiLine"></asp:TextBox></td>
</tr>
<tr>
<td colspan="2" align="center"><asp:Button ID="m_sendMessageButton" runat="server" Text="Send Message"
onclick="m_sendMessageButton_Click" /></td>
</tr>
<tr>
<td colspan="2" align="center"><asp:Label runat="server" ID="m_statusLabel" Text="" Visible="true"></asp:Label></td>
</tr>
</table>
and the code behind looks like this:
protected void Page_Load(object sender, EventArgs e)
{
m_emailAddressLabel.Text = this.Parameter;
m_sendEmailToLabel.Text = this.Parameter;
}
Have the table runat server, and let the user control implement INamingContainer.
Construct the ID for the table, and set it programmatically (HtmlTable) in an overridden CreateChildControls, to for instance string.Concat(ID, "table").
EDIT: You also need dynamic ID references in the javascript.
You could use some <asp:PlaceHolder>'s for this, and then set this from code-behind in CreateChildControls,
but maybe it is just easier to move these small scripts inline, and emit scripts from code-behind,
setting client attributes on the asp:Label
Just a quick idea, do the tables both have the same ID? so the script only picks the first it finds?
make the ID unique!
use a asp:table and then
onmousedown="enableDivArea('<%=tableName.ClientID%>');"
First of all you can set the CssClass property for the style.
for hidding:
document.getElementById(theIdOfYourTable).style.display = 'none';
enabled goes the same
oops, I'm sorry, forgot that you can't use <%%> in a server tag (and doing this out of my head). Better for you would be to call the script like this:
onmousedown="enableDivArea(this);"
In your script you don't have to do document.getElementById anymore, since you get the element as a param already now.
I will keep that mind on the last reponse by Henk.
I acutally "cheated" in a new way with the help of your guys information. I dynamically added an attribute to the label that I wanted the javascript to run from the onmousedown from the Page_Load event and formatted the string how I wanted. Here is the line, it works fantastically (at least what I was looking for).
m_emailAddressLabel.Attributes.Add("onmousedown", "enableDivArea('" + EmailFormDivArea.ClientID + "');");
Thanks for all your help.