I have created some div, label and checkbox using htmlgenericcontrol with runat="server". these dynamically created div is added inside the main div which is created at the design time.
Now, i want to access the checkbox which is there inside dynamically created div using c# on page load.
my dynamic div created using c# looks like this -
<div id='firstdiv'>
<div id='seconddiv'>
<label id='lbl' >
<input type="checkbox" id="chk" value="check" runat="server">
<div id='thirddiv'></div>
</label>
</div></div>
I tried below options but none of them worked -
HtmlGenericControl chkfirstdiv =
HtmlGenericControl)maindiv.FindControl(strchkfirstdiv) as
HtmlGenericControl;
HtmlGenericControl chkfirstdiv1 =
HtmlGenericControl)FindControl(strchkfirstdiv) as HtmlGenericControl;
LiteralControl literalControl =
LiteralControl)maindiv.FindControl(strchkfirstdiv);
Can anyone help in accessing the dynamic checkbox inside dynamic div?
For WebForms, you should create the control as <asp:Checkbox Id="MyCheckbox" runat="server" Text="Check" /> and the designer should generate Checkbox MyCheckbox for you and it's Checked property will be populated on postback without the need to call FindControl(..).
asp buttons will be accessed based on their names not IDs so place a name attribute inside checkbox definition like <asp:Checkbox Id="MyCheckbox" name="myCheckBox" runat="server" Text="Check" /> and access myCheckBox in backend on click event
Related
On MarkUp in my aspx page form I have these two TextBox :
<asp:TextBox ID="Mtl" runat="server" ReadOnly="true" Enabled="false"></asp:TextBox>
<asp:TextBox ID="ps" runat="server"></asp:TextBox>
The HTML view for these two TextBox is :
<input name="Mtl" type="text" value="901" readonly="readonly" id="Mtl" disabled="disabled" />
<input name="ps" type="text" id="ps" />
Now I need insert next to the TextBox with id ps the HyperLink where passed in querystring the value of TextBox with id Mtl, the value is 901.
I need pass this value for working in another aspx page.
I have tried this solution but the HyperLink is not clikable :
<asp:HyperLink ID="HlLink" runat="server"
NavigateUrl='<%# String.Format("~/box.aspx?v={0}&e={1}&l={2}", "y", "IC", HttpUtility.UrlEncode(Eval("Mtl").ToString())) %>'
ImageUrl="~/Images/edit_icon.gif" Target="_blank" Text="Mtl"></asp:HyperLink>
In this aspx page I don't have GridView, maybe it does not work for this reason ?
How to do resolve this ?
Please help me, thank you so much in advance.
Yes you are correct since your control is not inside a gridview (or any databoundcontrol for that matter) that's why it will not work.
Actually, <%# %> is called data bind expressions and they are evaluated for data bound controls only. For your HyperLink control to work with this code nugget you will have to explicitly call the DataBind method on that control like this:-
protected void Page_Load(object sender, EventArgs e)
{
HlLink.DataBind();
}
You can bind a jQuery 'Change' event on your textbox. And in this event you can set correct navigation url by picking up the value from the textbox and appending it in appropriate place in your query string. Its a fairly easy solution. If you don't know how to do it I can provide you a sample.
I've struggled with this for days now, trying to access html inputs, i.e. checkboxes or textboxex generated at runtime based on DB results. My HTML which is added as a literal control to a asp placeholder looks like this:
<div class='cart-item'>
<div class='product-name'> <h3>gold baseball figure</h3></div>
<img src='Graphics/gold-trophy.png'></img>
<div class='inventory-short-description'> <p>A finely crafted gold plated baseball figuring to top your choice of trophey base (sold seperatly).</p></div>
<div class='clear'></div>
<div class='item-price'><p>$22.95</p></div>
<div class='cart-item-checkbox'><label><input type='checkbox' id='1' name='1' runat='server'/> Select </label>
<a href='products.aspx?viewItem=1'>view item </a></div></div
Question is, how do I access this check box in the .cs code behind page?
My code which is generating this html and adding it to the page is in the overrided OnInit method. Looking at the placeholder on postback shows that the checkbox is in the literal control.
I've tried:
Page.FindControl() returns null when searching for dynamic control
ASP.NET page_init event?
FindControl() return null
http://forums.asp.net/t/1336244.aspx?finding+HTML+control
....And countless others.
Yesterday I used a hackish way to set the value of these checkboxes to a asp.net hidden field using jquery. My coworkers (all java devs) say this seems to be the wrong way to access these elements. Is there a better way? I'm beginning to think I've coded myself into a spot I can't get out of.
Thanks for the help.
In your .aspx
<asp:Repeater ID="rptItems" runat="server" EnableViewState="False">
<ItemTemplate>
<asp:TextBox ID="txtName" runat="server" />
</ItemTemplate>
</asp:Repeater>
In your .aspx.cs file you can access repeater in postback events as below
foreach (RepeaterItem rptItem in rptItems.Items)
{
TextBox txtName = (TextBox)rptItem.FindControl("txtName");
if (txtName != null) { System.Diagnostics.Debug.Write(txtName.Text); }
}
Say I have a dynamically generated LinkButton in my ascx.cs code-behind. How could I go about "printing" this control to my page? Obviously I can't do something like just print the Text property as I need the button to retain its hyperlink. I'm guessing I want to use the WebControl.Render method, but I'm not familiar with it at all and haven't been able to find a good example of its use.
This article http://www.tomot.de/en-us/article/3/asp.net/create-a-control-in-the-codebehind-and-retrieve-its-rendered-output should explain the basics of what you are looking for.
You could provide a label at the right location in the page: <asp:Label id="myLinkButtonPlace" runat="server"></asp:Label>, and in code, you could add the linkbutton to the controlcollection of the label: this.myLinkButtonPlace.Controls.Add(aLinkButton);
Following on from #Joachim VR, there are many other asp.net controls with which you can add a dynamically created control to.
<asp:Label id="Label1" runat="server" />
<asp:PlaceHolder id="Placeholder1" runat="server" />
<asp:Panel id="Panel1" runat="server" />
The above would render HTML different.
So the Label would render as a <span id="Label1"><a></a></span>
Panel as <div id="Placeholder1"><a></a></div>
The Placeholder would simply render as the <a></a>
I have a master page with a form element and the defaultbutton attribute set to a server-side ImageButton. On one of my pages I want to "override" the masterpage defaultbutton attribute by setting the Forms DefaultButton in the Page_Load event.
i.e
On mater page:
<form id="form1" runat="server" defaultbutton="btnSearch">....</from>
On the page Page_Load event that "override" the master page attribute:
this.Form.DefaultButton = this.ibRecalc.ID;
It errors with :
The DefaultButton of 'form1' must be the ID of a control of type IButtonControl
I am using image buttons which implements IButtonControl
Any ideas of what I might be doing wrong or a different way to approach the problem?
Thanks
Use UniqueId. Since you can have multiple server controls with the same server id, ie, in a GridView, the framework needs to the unique id to match up to.
this.Form.DefaultButton = this.ibRecalc.UniqueID;
You could try using the "DefaultButton" property of a Panel...
Place your button or whole page or div in asp:Panel
// start panel
asp:Panel ID="pnlOpsCallSummay" runat="server" DefaultButton="btnSearch"
............
//Controls of your requirement
..........
asp:Button ID="btnSearch" runat="server" Text="Search"
close the pannel
No need of Overriding the master page button
If you move the panel inside the login's template:-
<asp:login id="Login2" runat="server" loginbuttontype="Image">
<layouttemplate>
<asp:`enter code here`panel id="Panel1" runat="\
server"defaultbutton="LoginImageButton">
</asp:Panel>
</LayoutTemplate>
</asp:Login>
Then it will work without code.
You can set loginbuttontype="Image" or Link or button according to your requirement.
I'm trying to select an element from my webpage...
I have inserted a control into my page and i need to set some values an element inside the control at pageload from c# code.. The thing is, as soon as I insert the control into the page... A prefix is appended to the id name... Because of that new name, my css definition won't be appended...
Is there any way to access this element from C# without the need to make it an Id?
Edit: To clarify what Im trying to do here. Im trying to make a generic control, which gets a width and height set to it's parameters. I need to set this manually to the element by adding a style attribute. I can't make the element an id, because this will stop the possibility of making it generic.
This is whats inside of the control... the fact is, I need the imageRotatorDiv to be a class instead of an id. Otherwise i can't use multiple image rotators on one page.
But how can I select a class in a page from c# code? Is it possible?
<div id="imageRotatorDiv" runat="server">
<div class="imageRotator">
<asp:Repeater ID="rprImages" runat="server">
<ItemTemplate>
<asp:Image ID="imgItem" runat="server" />
</ItemTemplate>
</asp:Repeater>
</div>
</div>
you can define your style to a class name instead of id.
<asp:TextBox ID="MyText" CssClass="someclass" runat="server" />
html output
<input type="text" id="Something_MyText" class="someclass" />
css
.someclass { border:solid 1px red; }
In JQuery :
$("div[id$=MyDiv]").addClass("myDiv")
And you just need to define the myDiv CSS class. Or, to modify directly the style :
$("div[id$=MyDiv]").css("font-size", "14px");
JQuery details