I have a set textboxes where the user enters something and I use them when they click Submit. I need to add a button that lets them add another identical set of textboxes on the fly, enter data into those and then when the submit button is pressed I need to grab the value from both sets. The amount of added sets of items can be unlimited.
What's the best way to handle something like this in ASP.NET/C#?
I've looked around and have basically only gotten that you can try to use JQuery on the front end which leaves the backend a mess or you can try to use a GridView and rebind it every time with new items which can get messy.
Any better/easier way to do this?
Thanks for the help.
Use a Repeater control for the first set of text boxes, and have it repeat for each extra listing.
Here's my comment control repeater. It's a little arcane, as it was the first control I ever made in asp.net, but it should get you going.
<asp:Repeater runat="server" ID="repeater"
onitemdatabound="repeater_ItemDataBound"
>
<HeaderTemplate>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
</HeaderTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
<ItemTemplate>
<tr id="trContents" runat="server"><td>
<table id="tableComment" runat="server"
width="100%" style="border-color:Black; border-width:1px; border-style:solid;background-color:#EEEE99">
<tr><td id="tdHeader" runat="server"
style="border-color:Black; border-width:1px; border-style:solid;padding: 5px">
<table width="100%" id="tableHeader" runat="server">
<tr>
<td>
<asp:Label ID="headerText" runat="server"
Text="<%# GetHeader((CommentRecord)Container.DataItem) %>" />
</td>
<td style="text-align:right"> <%-- OnClientClick="aspnetForm.target ='_blank';" --%>
<asp:Button ID="btnEdit" runat="server" Text="Edit"
PostBackUrl="<%$ AppSettings:TextEditor %>"
/>
<asp:Button ID="btnReply" runat="server" Text="Reply"
PostBackUrl="<%$ AppSettings:TextEditor %>"
/>
</td>
</tr>
</table>
</td></tr>
<tr><td style="border-color:Black; border-width:1px; border-style:solid;background-color:#FFFFF0;padding: 10px">
<%# ((CommentRecord)Container.DataItem).Text %>
</td></tr>
<tr><td>
<table width="100%"><tr>
<td style="text-align:left">
<asp:Button ID="btnDelete" runat="server" Text="Delete"
CausesValidation="False" />
</td>
<td style="text-align:right">
<asp:Label ID="footer" runat="server" Text="<%# GetFooter((CommentRecord)Container.DataItem) %>" />
</td>
</tr></table>
</td></tr>
</table>
<asp:PlaceHolder ID="placeHolder" runat="server" />
</td></tr>
</ItemTemplate>
</asp:Repeater>
What I usually do in these cases is have Javascript that handles the client-side dynamic creation of additional textboxes, then before I submit the values, have all the data collected into a JSON object and save the JSON string into a <asp:HiddenField> control that ASP.NET can read and parse. This isn't a perfectly clean approach, but it is the best thing I have found so far.
I would create the textboxes using jQuery (assigning them a unique id) and then get the values on the server from the Request.Form key/value collection. This would be a rather simple solution.
I would recommend going the GridView way, and bind it to a DataSource object, e.g. ObjectDataSource. Clicking the add button should add an empty row to the data source, and this empty row will automatically be drawn by the GridView. When everything works you can wrap in an UpdatePanel to achieve smooth refresh when adding rows.
Related
Here is my asp.net Repeater From within it there is a button. I want to get the value of lblFaulType in a string in code behind when i click Button1, How can I do that?I have tried many approaches but nothing working. Please give me your suggestions.
<asp:Repeater ID="RepterDetails" runat="server">
<HeaderTemplate>
<table style="border:1px solid #0000FF; width:500px" cellpadding="0">
</HeaderTemplate>
<ItemTemplate>
<tr style="background-color:#EBEFF0">
<td>
<table style="background-color:#EBEFF0;border-top:1px dotted #df5015; width:500px" >
<tr>
<td >
<strong><asp:Label ID="Label18" runat="server" Text="Fault Category: " Font-Bold="true"/></strong>
<asp:Label ID="lblFaultType" runat="server" Text='<%#Eval("Fault Type") %>' Font-Bold="true"/>
</td>
<td >
<strong><asp:Label ID="Label19" runat="server" Text="Fault Description: " Font-Bold="true"/></strong>
<asp:Label ID="Label8" runat="server" Text='<%#Eval("Fault Description") %>' Font-Bold="true"/>
</td>
</tr>
<tr>
<td >
<strong><asp:Label ID="Label2" runat="server" Text="Building: " Font-Bold="true"/></strong>
<asp:Label ID="Label9" runat="server" Text='<%#Eval("Name") %>' Font-Bold="true"/>
</td>
<td >
<strong><asp:Label ID="Label3" runat="server" Text="Floor: " Font-Bold="true"/></strong>
<asp:Label ID="Label10" runat="server" Text='<%#Eval("FloorNo") %>' Font-Bold="true"/>
</td>
</tr>
<tr>
<td>
<strong><asp:Label ID="Label6" runat="server" Text="Room Number: " Font-Bold="true"/></strong>
<asp:Label ID="Label11" runat="server" Text='<%#Eval("RoomNumber") %>' Font-Bold="true"/>
</td>
</tr>
<tr>
<td ><strong><asp:Label ID="Label14" runat="server" Text="Created Time: " Font-Bold="true"/></strong> <asp:Label ID="lblUser" runat="server" Font-Bold="true" Text='<%#Eval("Time") %>'/></td>
<td ><strong><asp:Label ID="Label15" runat="server" Text="Created Date: " Font-Bold="true"/></strong><asp:Label ID="lblDate" runat="server" Font-Bold="true" Text='<%#Eval("Date") %>'/></td>
</tr>
<tr>
<td ><strong><asp:Label ID="Label16" runat="server" Text="Start Status: " Font-Bold="true"/></strong> <asp:Label ID="Label12" runat="server" Font-Bold="true" Text='<%#Eval("StartStatus") %>'/></td>
<td ><strong><asp:Label ID="Label17" runat="server" Text="Assign Status: " Font-Bold="true"/></strong> <asp:Label ID="Label13" runat="server" Font-Bold="true" Text='<%#Eval("AssignStatus") %>'/></td>
</tr>
</table>
</td>
</tr>
<tr>
<td >
<asp:TextBox ID="lblComment" runat="server" style="color:#000000; font-weight: bold;" placeholder="Describe the fault here" Text='<%#Eval("Comment") %>' TextMode="MultiLine" Columns="70" Rows="6" Enabled="false"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" class="text-center"><asp:Button ID="Button1" runat="server" Text="Assing Fault" class="btn btn-success" OnClick="Button1_Click" /> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
We may need to see the CodeBehind for this page, and specifically the "Button1_Click" method (click event).
Now though, it appears as though you only have one of the labels with an ID of "lblFaultType" (maybe you misspelled that in your initial description. Each of the other labels all carry sequentially numbered IDs (e.g. ID="Label1", ID="Label2", ID="Label3", etc), and your ClickEvent (the Button1_Click method) will need to iterate through those items to know 'which' label you are attempting to obtain a value from.
Suggestion: It may be better to apply a ClickEvent on each of the particular labels since it will have the ID there with it (a JScript/JQuery solution).
This actually a GREAT question!
(in fact good interview question)
Why?
Because how.net works for a gridview, listview, or a repeater?
They are ALL very similar.
If one has failed to grasp the “most basic” event model in .net, then suggestions to use JavaScript, or all kinds of wild approaches will be suggested (and they would get a failing mark in answering this question).
When using data bound controls that repeat data, then you can set a special command to trigger the Itemcommand event.
The attribute setting is called “CommandName”.
There are built in commands – and the command you use is important. However, "just" setting command name to somthing of your liking is sufficient in most cases.
This will CAUSE the ItemCommand event will fire. And once that occures, then you have "itemIndex" to point to any given row in the repeater (or gridview, or listview, or form view - the list goes on!!!).
So, add this to your button:
<asp:Button ID="Button1" runat="server" Text="Assing Fault"
class="btn btn-success" OnClick="Button1_Click"
CommandName = "Select" CommandArgument = '<%#Eval("Fault Type") %>'/>
Now, the the ItemCommand event, you can do this:
Protected Sub RepterDetails_ItemCommand(source As Object, e As RepeaterCommandEventArgs) Handles Repeater1.ItemCommand
Debug.Print("item command")
Dim MyRow As RepeaterItem = e.Item
Dim h As Label = e.Item.FindControl("lblFaultType")
Debug.Print(h.Text)
End Sub
Of course, since we set the CommandArguemnt to pass the value we want, then of course you can also do this:
debug.print("Value of FaultType = " & e.CommandArgument)
So, be it a classic "data aware" control in .net? Well be it a listview, gridview, repeater, and MANY MORE, then use the built in "gift horse" features that of course expected this common need and solution.
And you can get the selected index into the repeater with this:
Debug.Print(e.Item.ItemIndex)
Thanks guys but i found the answer at https://youtu.be/Oltxy1sGIds
So i did it like this:
RepeaterItem item = (sender as Button).NamingContainer as RepeaterItem; string type = +(item.FindControl("lblFaultType") as Label).Text;
We using Ajax Accordion pane. We dynamically binding ajax accordion from data set. So we not sure how much pane wil be bind.
Now we added few textbox and 1 button in each accordion pane which is mandotory so we used required field validator.
The problem is when i click buton in first pane textbox in first pane showing "It is required" which is fine but even if i typed textbox in first pane. I am not able to save since textbox in remaining pane showing "It is required". Please guide me.
<cc1:Accordion ID="accRcvDetails" runat="server" SelectedIndex="-1" ContentCssClass="accordion-content" RequireOpenedPane="false" HeaderCssClass="accordion-header"
HeaderSelectedCssClass="accordionSelected" OnItemCommand="accRcvDetails_ItemCommand" OnItemDataBound="accRcvDetails_ItemDataBound">
<HeaderTemplate>
</HeaderTemplate>
<ContentTemplate>
<td class="searchlabel">
<asp:Label ID="lblNotes" runat="server" Text="Notes:"></asp:Label>
</td>
<td class="searchtext" colspan="3">
<asp:TextBox runat="server" ID="txtNotes" Width="100%" TextMode="MultiLine" Height="35px" />
<asp:RequiredFieldValidator ControlToValidate="txtNotes" Text="Note Field is Required" runat="server" />
</td>
<td>
<td style="text-align: right" colspan="8">
<asp:Button ID="btnSave" CssClass="searchbutton Accbtnsave" runat="server" CommandName="Save" Text="Save" />
</td>
</ContentTemplate>
</cc1:Accordion>
You need to mention ValidationGroup for every textbox and button, as you are binding the accordion at runtime, so need to bind ValidationGroup at runtime with some property that has unique/different value for every accordian. Lets say you are binding accordion with rows of Groups, you can mention groupId in ValidationGroup then. Your updated code must looks alike:
<asp:RequiredFieldValidator ControlToValidate="txtNotes" Text="Note Field is Required" runat="server" ValidationGroup='<%# Eval("GroupId") %>'/>
<asp:Button ID="btnSave" CssClass="searchbutton Accbtnsave" runat="server" CommandName="Save" Text="Save" ValidationGroup='<%# Eval("GroupId") %>'/>
This way each accordion has its own ValidationGroup and clicking on button will not fire the validators in other accordions
I am working on a website where i need to search for items from database and display it in page.I am using Datalist for displaying all the items .Now i need to display all the items according to some category.For example if i search for a two-wheeler it may have many categories or manufacturer's.Now I want to display it separately according to the categories.I can use many datalist to do that,but it will slow down the site.Instead which control can i use to do this.I searched the web but got no idea.So please give me sugessions to go about it.Any sugessions will be appreciated.
Code:
<asp:DataList ID="Dlitems" runat="server" RepeatDirection="Horizontal" RepeatColumns="4"
CellPadding="0" CellSpacing="15">
<ItemTemplate>
<table>
<tr>
<td>
<asp:ImageButton ID="ImgbtnProductImage" CssClass="imgdisp" ImageUrl='<%# Eval("ImagePath") %>'
CommandArgument='<%#Eval("ProductCode") %>' runat="server" CommandName="cmdView" />
</td>
</tr>
<tr>
<td>
<table>
<tr>
<td width="20px"></td>
<td>
<img src="../Database/images/inr.jpg" alt="addtocart" />
<asp:Label ID="lblproductprice" runat="server" Text='<%# Eval("Price") %>' CssClass="lbl" />
</td>
<td>
<asp:ImageButton ID="imgbtnaddtocart" runat="server" Height="25px" Width="25px" ImageUrl="~/Database/images/addtocart.JPG"
ToolTip="Add to Cart" CommandArgument='<%#Eval("ProductCode")+","+ Eval("ProductName")+","+ Eval("ImagePath")+","+ Eval("Price")+","+ Eval("LongDescription") %>'
CommandName="addtocart" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList>
You can take benefit of gridview.
Bind you gridview data.
And letter merge the rows.
For an example you can use the below link
http://www.codeproject.com/Articles/34337/How-to-merge-cells-with-equal-values-in-a-GridView
Edit 1
Some links
How to display group data separately using DataList in ASP.NET?
http://aspnettuts.wordpress.com/2010/10/21/asp-net-repeater-group-recordsdata-delete-selected-rows/
You should go for a Repeater control.
Example on Repeater
<asp:Repeater runat="server" ID="Repeater1">
<ItemTemplate>
<asp:ImageButton ID="ImgbtnProductImage" CssClass="imgdisp" ImageUrl='<%# Eval("ImagePathForTwoWheeler")%> + <%# Eval("ImagePathForCategory") %>'
CommandArgument='<%#Eval("ProductCode") %>' runat="server" CommandName="cmdView" />
</ItemTemplate>
</asp:Repeater>
I have a gridview that get binds dynamically. i have a linkbutton attached with every row that opens a modal popup window which I need to show some text which is in a hidden field in gridview.
I need to call a javascript function that sets the value of the label in the popup panel with the text of the hidden field. The problem is that the value is always blank when the popup is displayed.
Java script code is -
function SetNotesonModal(note)
{
//debugger;
var notes = document.getElementById(note.id).innerHTML;
document.getElementById('ctl00_ContentPlaceHolder1_popupLblNote').value = notes;
}
Code for calling the function is -
lnkViewNotes.Attributes.Add("OnClick", "return SetNotesonModal(" + e.Row.FindControl("lblNote").ClientID + ");");
The controls in gridview are as -
<ItemTemplate>
<asp:Label ID="lblNote" runat="server" Text='<%# Bind("notes") %>'></asp:Label>
<asp:LinkButton ID="lnkViewNotes" runat="server">View</asp:LinkButton>
<asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="lnkViewNotes" PopupControlID="Panel2" CancelControlID="popupBtnClose">
</asp:ModalPopupExtender>
</ItemTemplate>
And the panel for popup is -
<asp:Panel ID="Panel2" runat="server" ScrollBars="Auto" align="center" Style="display: none"
CssClass="modalPopup">
<table class="border" style="text-align: left; height: 100%" width="100%">
<tr align="left" style="background-color: #5D7B9D; color: White">
<th>
Notes
</th>
</tr>
<tr>
<td>
<asp:Label ID="popupLblNote" runat="server"></asp:Label>
</td>
</tr>
<tr>
<td>
<asp:Button ID="popupBtnClose" runat="server" Text="Close" />
</td>
</tr>
</table>
</asp:Panel>
The javascript function is being called perfectly and its is also setting value of the label in popup panel correctly but not sure why the popup comes blank every time.
Any kind of help is welcome.
Thanks
For every linkbutton or button that should not trigger post back You should try adding:
OnClientClick="return false;"
Also take a look at postback with jquery
I have an asp.net Repeater control .I have to display only 5 rows in the repeater. I searched about it in Google but most of the resources are talking about how to do it with DataSet. In my case, I am using SqlDataSource. So I can have paging in this Repeater control?
ASP.NET Code:
<asp:Repeater ID="Repeater3" runat="server" DataSourceID="SqlDataSource3">
<HeaderTemplate>
<div>
<table border="1">
<thead>
<tr>
<td colspan="3">
<center> <strong>Safety Quizzes Record</strong> </center>
</td>
</tr>
<tr>
<td>
<center> <strong>Quiz Title</strong> </center>
</td>
<td>
<center> <strong>Date & Time</strong> </center>
</td>
<td>
<center> <strong>Score</strong> </center>
</td>
</tr>
</thead>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<p>
<%# Eval("Title") %>
</p>
</td>
<td>
<p>
<%# Eval("DateTimeComplete") %>
</p>
</td>
<td>
<p>
<%# Eval("Score") %>
</p>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</div>
</FooterTemplate>
</asp:Repeater>
<asp:SqlDataSource ID="SqlDataSource3" runat="server"
ConnectionString="<%$ ConnectionStrings:testConnectionString %>" SelectCommand="SELECT dbo.Quiz.Title, dbo.UserQuiz.DateTimeComplete, dbo.UserQuiz.Score
FROM dbo.employee INNER JOIN
dbo.UserQuiz ON dbo.employee.Username = dbo.UserQuiz.Username INNER JOIN
dbo.Quiz ON dbo.UserQuiz.QuizID = dbo.Quiz.QuizID
WHERE (dbo.employee.Username = #Username)">
<SelectParameters>
<asp:Parameter Name="Username" />
</SelectParameters>
</asp:SqlDataSource>
UPDATE:
What I want is showing only 5 items in the Repeater and the others will be listed on the other pages of the Repeater. So how I can have Pagining with SqlDataSource as mentioned above.
The Repeater control does not support paging out-of-the-box.
You could however implement it but it would require you to manually code it.
I would like to recommend you to change the Repeater control for the ListView control
Differences:
Repeater. This control does not support paging, updating, inserting or deleting operations out-of-the-box, if you want these features you would need to manually code them.
ListView. This is the most flexible of all data-bound controls. It's based on templates like the Repeater and DataList controls. It does support CRUD operations automatically mapping the operations agains your data source control. It does support server paging, and you can customize pretty much everything
BTW, since you are using a SqlDataSource, you would have to manually add paging code to your queries or store procedures, you could change that behavior if you use a LinqDataSource or an EntityDataSource
This is a simplified ListView markup:
<asp:ListView runat="server" ID="lv"
DataSourceID="lds" DataKeyNames="emp_id"
EnableModelValidation="false"
EnablePersistedSelection="false"
>
<LayoutTemplate>
<br />
<br />
A static header
<div runat="server" id="itemPlaceHolder"></div>
<br />
<asp:DataPager runat="server" PageSize="4">
<Fields>
<asp:NextPreviousPagerField
ButtonType="Button"
ShowFirstPageButton="true"
ShowLastPageButton="true"
/>
</Fields>
</asp:DataPager>
</LayoutTemplate>
<ItemTemplate>
<div style="background-color:Gray">
First Name
<div><asp:Label runat="server" ID="lbl" Text='<%# Eval("fname") %>'></asp:Label></div>
<br />
<asp:GridView ID="GridView1" runat="server" DataSource='<%# Eval("Achivements") %>' />
<br />
<asp:LinkButton ID="LinkButton1" Text="Select" CommandName="Select" runat="server" />
<asp:LinkButton ID="LinkButton2" Text="Edit" CommandName="Edit" runat="server" />
<asp:LinkButton ID="LinkButton4" Text="Delete" CommandName="Delete" runat="server" />
</div>
</ItemTemplate>
<ItemSeparatorTemplate>
<hr />
</ItemSeparatorTemplate>
</asp:ListView>
Please use the PagedDataSource shown at link http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.pageddatasource.aspx