I've used this tutorial to use a repeater to display a list of names on a page on my project.
So I'm using dynamic data and in my aspx.cs page I have:
List<string> subContractors = new List<string>();
Context db = new Context();
subContractors = (from SUBContractors in db.BOQ_SubContractors
where SUBContractors.Bill_Of_Quantity_id == this.boqId
select SUBContractors.Sub_Contractor.Company_Name).ToList();
repeaterShowSubContractorName.DataSource = subContractors;
repeaterShowSubContractorName.DataBind();
In my aspx:
<asp:Repeater ID="repeaterShowSubContractorName" runat="server" OnItemDataBound="subContractors_ItemDataBound">
<HeaderTemplate>
<table>
<tr>
<th>
<asp:Label ID="SubConName" Text="SubContractor Name" runat="server"></asp:Label>
</th>
</tr>
</table>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:Label ID="SubCon" Text='<%# Eval("subContractors") %>' runat="server"></asp:Label>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
The error is coming from OnItemDataBound="subContractors_ItemDataBound".
What or where do I link this to? I have no subContractors_ItemDataBound at the moment.
just remove OnItemDataBound="subContractors_ItemDataBound" from your aspx page
Edit this error occurred because you don't have subContractors_ItemDataBound method in .cs file to handle OnItemDataBound event , so you have to handle OnItemDataBound event or just remove OnItemDataBound="subContractors_ItemDataBound"
Edit to bind list of strings use :
<asp:Label ID="SubCon" Text='<%# Container.DataItem %>' runat="server"></asp:Label>
Do this on your page load (or wherever you want to laod data) to link your data with repeater
repeaterShowSubContractorName.DataSource = subContractors;
repeaterShowSubContractorName.DataBind();
and remove
OnItemDataBound="subContractors_ItemDataBound"
Related
I have an EmptyDataTemplate on my ASP.NET webform which allows users to add a record to the database. Depending on the permissions of the user, this EmptyDataTemplate needs to be visible and hidden if no data is found (I have this working!)
For example, my user has Read Access only. When they search a specific criteria, no results are displayed they cannot see the EmptyDataTemplate. However, if they search a criteria, and there is data, data is displayed WITHOUT the headers.
Can someone please help explain why this is happening and if there's a way around it?
The headers are HeaderText on TemplateFields.
I'm hoping it's a general trick.
Thank you in advance for your help!
Please note, it's the HeaderText in the TemplateFields I want to display- not the in the emptyDataTemplate as they'll head up the columns of data that match the search criteria.
edit: code added as requested
For hiding the EmptyDataTemplate:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
Control control = null;
control = GridView1.Controls[0].Controls[0];
if (userManagement.getMIFReadWriteAccess() == "Read")
{
control.Visible = false;
Export_All.Visible = true;
}
else if (userManagement.getMIFReadWriteAccess() == "Write")
{
control.Visible = true;
Export_All.Visible = true;
}
}
in markup for the header text (i've only shown one column but the markup is the same for all of them)
<asp:TemplateField HeaderText="ID">
<ItemTemplate>
<asp:Label ID="lbl_Index" runat="server" Text='<%#Eval("id") %>'></asp:Label>
<asp:Label ID="lbl_ID" runat="server" Text="" Visible="false"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
EmptyDataTemplate:
<EmptyDataTemplate>
<div id="emptyData" runat="server">
<tr>
<th></th>
<th>Serial Number</th>
<th>Comments</th>
<th>Review Date</th>
<th>Approved By</th>
</tr>
<tr>
<td>
<asp:Button runat="server" ID="btInsert" Text="In" OnClick="Add" CommandName="EmptyDataTemplate" Class="Button" OnClientClick="return confirm('You are about to confirm this action. Please confirm this action by clicking OK. If you do not wish to do this, please select Cancel.');" />
<br />
<asp:Button runat="server" ID="btInsertOut" Text="Out" OnClick="AddOut" CommandName="EmptyDataTemplate" Class="Button" OnClientClick="return confirm('You are about to confirm this action. Please confirm this action by clicking OK. If you do not wish to do this, please select Cancel.');" />
</td>
<td>
<asp:TextBox runat="server" ID="tb_Serial_Number" CssClass="text"></asp:TextBox>
</td>
<td>
<asp:TextBox ID="tb_comments" Width="100%" MaxLength="50" runat="server" placeholder="max 50 characters"/>
</td>
<td>
<asp:TextBox ID="tb_reviewDate" runat="server" DataFormatString="{0:dd/mm/yyyy}" Text='<%#Eval("review_by") %>'></asp:TextBox>
</td>
<td><asp:DropDownList ID="tb_approved_by" runat="server">
</asp:DropDownList> </td>
</tr>
</div>
</EmptyDataTemplate>
After trial and error, I found that programatically adding a header row in C# did the trick. Probably not the best way of doing it, but it worked.
Code is as follows:
#region show the emptyDataTemplate depending on user rights
Control control = null;
control = GridView1.Controls[0].Controls[0];
if (userManagement.getMIFReadWriteAccess() == "Read")
{
control.Visible = false;
GridViewRow HeaderRow = new GridViewRow(1, 0, DataControlRowType.Header, DataControlRowState.Insert);
TableCell HeaderCell2 = new TableCell();
HeaderCell2.Text = "Country";
HeaderCell2.ColumnSpan = 1;
HeaderRow.Cells.Add(HeaderCell2);
//Repeat the above for every column of data you have!
GridView1.Controls[0].Controls.AddAt(0, HeaderRow);
Long story short, for an old project I used ASP.Net Dynamic Data and probably did a terrible job with it. One of the Field Templates has multiple controls in it, and now I need to get at the value of one control from the FormView's Submit event because we changed the way that value is stored.
I can find the Field Template itself using FindFieldTemplate... but I can't figure out how to get to the controls inside of the template.
How can I do that without re-engineering the whole thing to pull that one field out? It would probably be more correct to re-engineer it, but this is a quick fix for a website that's going to be scrapped in a couple months.
EDIT: Was asked to show code so here it is. The FormView is pretty standard, just uses an . The Field Template actually has it's own listview and I'm controlling it's mode in codebehind. But I need to get the value of txtTitle.
Ticket_TicketMemo.ascx:
<asp:ListView ID="lvTicketMemos" DataSourceID="ldsTicketMemo"
InsertItemPosition="FirstItem" OnLoad="lvTicketMemo_Load" runat="server">
<LayoutTemplate>
<div style="overflow:auto; height:125px; width:600px;">
<table class="ListViewTable" runat="server">
<tr id="itemPlaceHolder" runat="server" />
</table>
</div>
</LayoutTemplate>
<ItemTemplate>
<tr valign="top" class='<%# Container.DataItemIndex % 2 == 0 ? "" : "Alternate" %>'>
<td><asp:DynamicControl ID="dcType" DataField="Type" runat="server" /></td>
<td><asp:DynamicControl ID="dcMemo" DataField="Memo" runat="server" /></td>
<td><asp:DynamicControl ID="dcCreateTime" DataField="CreateTime" runat="server" /></td>
</tr>
</ItemTemplate>
<InsertItemTemplate>
<tr valign="top">
<td colspan="3">
<asp:TextBox ID="txtTitle" Width="99%" Visible="false" OnLoad="txtTitle_Load" runat="server" /><br /><br />
</td>
</tr>
<tr valign="top">
<td colspan="3" width="600px">
<asp:TextBox ID="txtMemo" Text='<%# Bind("Memo") %>' Width="99%" OnLoad="txtMemo_Load" TextMode="MultiLine"
Rows="5" runat="server" />
<asp:RequiredFieldValidator ID="rfvMemo" Text="Must enter notes" ControlToValidate="txtMemo" runat="server" />
</td>
</tr>
</InsertItemTemplate>
I have just simulated your problem in my Dynamic Data project. Based on my research (and search) in order to get control value (not from DynamicControl value) in Dynamic Data you should implement the following method (i am using this method in my project and i have found one on Steve blog, i don't remember full link):
/// <summary>
/// Get the control by searching recursively for it.
/// </summary>
/// <param name="Root">The control to start the search at.</param>
/// <param name="Id">The ID of the control to find</param>
/// <returns>The control the was found or NULL if not found</returns>
public static Control FindControlRecursive(this Control Root, string Id)
{
if (Root.ClientID.IndexOf(Id) > 0)
return Root;
foreach (Control Ctl in Root.Controls)
{
Control FoundCtl = FindControlRecursive(Ctl, Id);
if (FoundCtl != null)
return FoundCtl;
}
return null;
}
Now, my EXAMPLE.
First, my custom Insert.aspx page with FormView and EntityDataSource:
<asp:FormView runat="server" ID="FormView1" DataSourceID="DetailsDataSource" DefaultMode="Insert"
OnItemCommand="FormView1_ItemCommand" RenderOuterTable="false">
<InsertItemTemplate>
<table>
<tr valign="top">
<td colspan="3">
<asp:TextBox ID="txtTitle" Width="99%" Visible="true" runat="server" /><br />
<br />
</td>
</tr>
</table>
</InsertItemTemplate>
</asp:FormView>
<asp:EntityDataSource ID="DetailsDataSource" runat="server" EnableInsert="true" OnInserted="DetailsDataSource_Inserted" />
Then, Inserted event of EntityDataSource:
protected MetaTable table;
protected void DetailsDataSource_Inserted(object sender, EntityDataSourceChangedEventArgs e)
{
if (e.Exception == null || e.ExceptionHandled)
{
string strTitle = String.Empty;
Control CtlTitle = FormView1.FindControlRecursive("txtTitle");
if (CtlTitle != null)
{
TextBox TextBoxTitle = (TextBox)CtlTitle;
strTitle = TextBoxTitle.Text;
}
Response.Redirect(table.ListActionPath + "?" + "Department_Id=" + strTitle);
}
}
Finally, i enter the text into txtTitle, for example, 13 and then i get
I am new to .NET, so I'm struggling with this. I have a content page, with a repeater control. I have a Dictionary, which is a Dictionary<string, Dictionary<int,[object]>>. I want the value of the controls inside the repeater control to get it from the object attributes - Candidate Name, would be object.CandName, candidate phone would be object.Phone etc.
I am not sure how to use Eval for this type of Dictionary. Most of the examples point to Eval("Value"), but it is not giving the correct value for me. Kindly help!
<asp:Content ID="Content2" ContentPlaceHolderID="content" Runat="Server">
<div id="rcontent">
<table>
<tr>
<td>
<asp:Label ID="lblerror" runat="server" Text="" Visible="true" CssClass="alert"></asp:Label>
</td>
</tr>
</table>
<div id ="rptdiv">
<asp:Repeater ID="Repeater1" runat="server" EnableViewState="false">
<ItemTemplate>
<div id="Div3">
<table class="GridViewStyleNoBorder" width=750px cellspacing="0" border="0" >
<tr>
<td class="PagerStyle" colspan="4">
<asp:Label ID="lblName" Runat="server"
Text='<%= Need the value of the [object].objectproperty from dictionary here %>' />
</td>
</tr>
</table>
</div>
This is my Page_Load code behind - BLDecision is my business layer code, which returns the dictionary and dictionary values are correct. I checked them in debug mode.
Code Behind:
Dictionary(int, Dictionary(int, InterviewFeedback)) ;
CandIntDetails = new Dictionary(int, Dictionary(int, InterviewFeedback))();
BLDecision objBLDecision = new BLDecision();
int ReqCategoryID = 0;
if (Request.QueryString["ReqCategoryID"] != null)
ReqCategoryID = int.Parse(Request.QueryString["ReqCategoryID"].ToString());
CandIntDetails = objBLDecision.GetCandidatesforReqCategory(ReqCategoryID);
Repeater1.DataSource = CandIntDetails;
Repeater1.DataBind();
Should I use from codebehind, can I not do Eval('<% ....%>') in the aspx page?
Thanks in advance for your help.
You cannot do it with only one repeater. Since you have a container inside a container, you need a Repeater inside a repeater:
<asp:Repeater ID="Repeater1" runat="server" EnableViewState="false">
<ItemTemplate>
<div id="Div3">
<table class="GridViewStyleNoBorder" width=750px cellspacing="0" border="0" >
<asp:Repeater ID="Repeater2" runat="server" DataSource='<%# Eval("Value")' >
<ItemTemplate>
<tr>
<td class="PagerStyle" colspan="4">
<asp:Label ID="lblName" Runat="server"
Text='<%# Eval("Name") %>' />
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</div>
</ItemTemplate>
</asp:Repeater>
If CandIntDetails is a Dictionary<int, Dictionary<int, InterviewFeedback>>, you need to extract from that the specific collection you want to use as the data source of your repeater. The reason why is because you want to render a collection of InterviewFeedback objects, which CandIntDetails is not. CandIntDetails probably looks something like this:
{
46: {
0: [InterviewFeedback],
1: [InterviewFeedback],
2: [InterviewFeedback]
}
}
It's not clear from your post what the keys are for the inner or outer dictionaries, so this is speculative. If the outer key is the the category ID (not sure why GetCandidatesforReqCategory would return something like that), and if you don't care about the inner dictionary keys, you can extract your data source like this:
Repeater1.DataSource = CandIntDetails[ReqCategoryID].Values;
That will make your data source a straight collection of InterviewFeedback objects. Once that's your data source, you can Eval to access the properties of the InterviewFeedback objects.
I need to generate a table from a List (Of Students). My Student class has properties for AcademicYear, TeachingSet, Surname and Forenames, is sorted in that order and also properties for ID and start date. The table should nest TeachingSets within AcademicYears and then the students within the TeachingSets, as shown in the table I've mocked up at http://www.ifslearning.ac.uk/files/student-table.jpg
Using a repeater I get
08-10 students B74394 Mzejb Bsppn
08-10 students B74395 Lbuifsjof Bvti
08-10 students C68924 Epoob Cmpblf
08-10 students D41468 Ipxbse Dbwfz
But I need to have
08-10 students
- B74394 Mzejb Bsppn
- B74395 Lbuifsjof Bvti
- C68924 Epoob Cmpblf
- D41468 Ipxbse Dbwfz
If you use asp .net Web Forms then you can look at ListView, DataList and Repeater controls. I would recommend you to try ListView. Here is a deep description about using this control. It is very simple to configure any layout you need:
<asp:ListView runat="server" ID="ListView1">
<LayoutTemplate>
<table>
<tr runat="server" ID="itemPlaceholder" />
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td><%#Eval("YourObjectProp") %></td>
...
</td>
</ItemTemplate>
</asp:ListView>
You can group your objects like this:
List<AcademicYear> academicYears = new List<AcademicYear>();
var year = new AcademicYear { Year = "08-10" };
year.Students.Add(new Student { Name = "Mzejb Bsppn" });
year.Students.Add(new Student { Name = "Lbuifsjof Bvti" });
...
And layout:
<asp:ListView runat="server" ID="ListView1">
<LayoutTemplate>
<asp:PlaceHolder runat="server" ID="itemPlaceholder" />
</LayoutTemplate>
<ItemTemplate>
<%#Eval("Year") %> students<br />
<asp:ListView runat="server" ID="nestedListView" DataSource='<%# Eval("Students") %>'>
<LayoutTemplate>
<asp:PlaceHolder runat="server" ID="itemPlaceholder" />
</LayoutTemplate>
<ItemTemplate>
<%#Eval("Name") %><br />
</ItemTemplate>
</asp:ListView>
</ItemTemplate>
</asp:ListView>
Greetings!
I'm looking for some advice regarding an approach to displaying data in a FormView based on a selection of a DropDownList within that FormView control. For example, I have a UserControl with the following:
<asp:XmlDataSource ID="xdsMyXmlData" runat="server" EnableCaching="false" XPath="Root/Membership" />
<asp:FormView ID="fvwMyFormView" runat="server" DataSourceID="xdsMyXmlData">
<ItemTemplate>
<div>
<h2><%# XPath("Title") %></h2>
<fieldset>
<asp:DropDownList ID="ddlMemberTypes" runat="server" DataSource='<%# XPathSelect("MenuItems/*") %>'></asp:DropDownList>
</fieldset>
<table>
<thead>
<tr>
<th><%# XPath("Columns/Name") %></th>
<th><%# XPath("Columns/Age") %></th>
<th><%# XPath("Columns/DateJoined")%></th>
</tr>
</thead>
<tbody>
<asp:Repeater ID="rptMembershipInfo" runat="server" DataSource='<%# XPathSelect("Members/*") %>'>
<ItemTemplate>
<tr>
<th><%# XPath("Data/Name") %></th>
<td><%# XPath("Data/Age") %></td>
<td><%# XPath("Data/DateJoined") %></td>
</tr>
</ItemTemplate>
</asp:Repeater>
</tbody>
</table>
</div>
</ItemTemplate>
</asp:FormView>
The UserControl's OnLoad() looks like this so far:
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
string l_XmlData = MyControllerClass.GetMembershipTableXml(0);
xdsMyXmlData.Data = l_XmlData;
}
I would like to be able to pass the value of the DropDownList's selected item into GetMembershipTableXml() in order to retrieve the corresponding XML and then use it to populate the values of the FormView. What would the best way be to do this? Doing a Response.Redirect back to the current page using the selected DropDownList value as a query string variable? I'm hoping there's a better approach. What do you think?
You can create an event for OnSelectedItemChanged on your DropDownList; when this occurs, you can grab the selected item, and call your GetMembershipTableXml function.
Finally, dont forget to call DataBind on your FormView control to update the values :)
I think that's what you're after, hopefully it helps!