C# - Implement A Data-bound Control With Templates?
Jan 25, 2010
I want to implement a very simple list control. It has 2 properties:
RowTemplate (ITemplate)
DataSource (IList)
The control implementation must render each row using the template specified in RowTemplate passing the corresponding object in the DataSource list, so that, if I have a property called Name in the passed object, it would be accessible with a Eval("Name").
I want an example of how to render the control using RowTemplate and how to pass the correspondent DataSource object to the template.
I'm reading the MSDN documentation on the subject: Data Binding Expression Overview and Binding to Databases but I just can't find how to implement a control that passes an object to the template.
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Jul 5, 2010
i want to implement this feature in listview control which is bound to objectdatasource... and in on mouse over i have to show the data from database again. when you mouse over the linkbutton then div popup with contents...how to imlement with listview.
link for the feature is
[URL]
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Nov 30, 2010
I have a FormView control in an ASP.NET page. I use the InsertItemTemplate and EditItemTemplate to provide data manipulation functionality, and it is working very well. I would like to allow the user to "Copy to new" from an existing item. In other words, I want the user to be able to display an item as if they are going to edit it, then, if they click a "Copy to new" button, it will load the information from that item into an "Insert" form so they could just change the bits of data that they want, and insert the new item.
The data objects we are dealing with are fairly large so, providing this functionality will save the user a lot of data entry misery.
I have experimented with copying the existing EditItemTemplate controls in the Copy button's click event, storing them, and writing them to the new InsertItemTemplate controls, once the form is reloaded (in the Page_PreRender event). But this is pretty ugly stuff. There has to be a better/simpler way.
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Mar 10, 2010
Look at : [URL]... In this you can see a rotating images(along with text). And on click of this image...a server side code will get execute.
how can I implement the same in asp.net 2.0
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Feb 1, 2011
i am using two tables for salary components like bonus,hra,ta,da.one is salary lookup table for viewing which components are chosen and according to this salary table is created dynamically.i want to view data fields of salary table in gridview and update thier value.
now problem is that how to create template field and edit template field for updating fields of salary table because field of the salary table changing every time as it is creating dynamically.
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Mar 23, 2010
i am new to asp.net and need some help with writing a user control that fits the following specification:
i have a list of properties. each property is a string triplet (type, name, value). TYPE can be "boolean", "string", "int" with VALUE taking appropriate values.
so a list of properties would look like: {("boolean", "isMember", "true"), ("int", "age", "39")} .
i need to display the list of properties in a table with a corresponding control for each value type
("boolean" in a CheckBox, "string" "int" in a TextBox)
and be able to to edit the values. I wrote a small control that displays a single property. It puts the NAME in a Label and depending on the TYPE inserts
the value in a TextBox or CheckBox and then puts that in a PlaceHolder. I could afterwards display the list in a table when a button is clicked.
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May 25, 2010
What is the best way to create a data bound ASP.NET user control? I have a user control that contains a drop down list and three label controls. I would like to data bind the drop down list, and have the label controls display different properties of the data source. I have Googled for an example of IDataSource and User Control, but cannot find any good information. This must be a common use of a user control?
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Dec 16, 2010
I have a gridview control on a .aspx page. It is a bound control. So basically I didn't have to write any code to pull the data from database and show it on the grid.
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionStrdatabase %>"
ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>"
SelectCommand="SELECT * FROM order WHERE SETTLEMENT_DT > AS_OF_DT"
</asp:SqlDataSource>
<asp:GridView ID="GridViewMissingCusipNumbers" runat="server"
AllowPaging="True" AllowSorting="True" SkinID="Professional" Font-Name="Verdana"
Font-Size="10pt" Cellpadding="4"
HeaderStyle-BackColor="#444444"
HeaderStyle-ForeColor="White"
AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" DataKeyNames="BO_SECID"
onrowcommand="GridViewMissingCusipNumbers_RowCommand" Height="285px"
onrowediting="GridViewMissingCusipNumbers_RowEditing"
onrowupdated="GridViewMissingCusipNumbers_RowUpdated"
onrowupdating="GridViewMissingCusipNumbers_RowUpdating" Width="426px"
onrowcancelingedit="GridViewMissingCusipNumbers_RowCancelingEdit">
<Columns>
<asp:BoundField ReadOnly="true" DataField="BO_SECID" HeaderText="BO SECID"
SortExpression="BO_SECID" />
<asp:BoundField DataField="CUSIP" HeaderText="PROXY CUSIP" SortExpression="CUSIP" />
<asp:BoundField DataField="PRICE" HeaderText="PRICE" SortExpression="PRICE" />
<asp:CommandField ShowEditButton="true" />
</Columns>
<HeaderStyle BackColor="#444444" ForeColor="White"></HeaderStyle>
<AlternatingRowStyle BackColor="Silver" BorderColor="Black" />
</asp:GridView>
So far so good. But where is no data is not returned from the database, I want to display something on the page saying "No data returned". But I don't know which gridview control event gets fired so that I can write some code in it to check if the records returned are zero.
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Mar 18, 2010
For example, let's say I have a HyperLink:
<asp:HyperLink runat="server" Text="Foo" NavigateUrl="foo.aspx" />
How can I set the NavigateUrl on the server side, without having to go the code-behind?
This doesn't work of course:
<asp:HyperLink runat="server" Text="Foo" NavigateUrl="<%= urlString %>" />
(where urlString might be a string I created earlier in the page)And this doesn't work because the HyperLink is not within a data bound control:
<asp:HyperLink runat="server" Text="Foo" NavigateUrl='<%# urlString %>' />
I guess I could just use a standard anchor element:
<a href="<%= urlString %>">Foo</a>
But I'd rather not mix up HTML and ASP.NET controls, and it would be handy to be able to do this for other controls.
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Jan 1, 2011
I've been using the Item Inserted event for my data controls, such as details view. I'm wondering if there are advantages to doing this with the data sources instead of the data control. There is a lot of overlap in the events provided by these two types of controls. Are there advantages to using the events raised by the data source instead of the ones raised by the data control itself. Should I be using the events raised by the data source instead of the control used to enter the data?
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Apr 26, 2010
I have recently found this snippet of code but I am unable to get it to work. Does anybody know if the $index syntax has changed in the latest version of the client templates?
[Code]....
I keep recieving $index is undefined.
The offending line is
[Code]....
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Nov 1, 2010
I have a web form, and an "add vendor" button. Click the button, a modal dialog pops up (ajax:ModalPopupExtender). User selects one of two radio buttons which shows a data bound asp:View in an update panel - this view is data bound to a single row and must be populated by the user. However I also want to provide a cancel button which should close the modal dialog and reset the bound view.
However what is happening is that the ModalExtender closes, but when the "add vendor" button is presented again, it's still bound to the same data. Do I need to clear my data source? How so I reset the forms/views so that when the 'add vendor' button is clicked again the form is presented as it should be (IE the 2 select options, picking one re-binds the asp:View)?
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Mar 26, 2010
is there a way to get the PropertyName of a data bound control? For example:
I have a text box like this:
[Code]....
How can I get the info that this text box is bound to the property with the name "Test"?
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Jul 5, 2010
I have a ListView control that is bound to an SQLDataSource.
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Mar 24, 2010
I need to develop a custom data-bound control which will contain, few text-boxes, drop-down lists, labels, and other standard web-server controls. And, I want to be able to load this control from a web page on button click. When the user enters any data to any of its child controls, i should be able to save, and also retrieve when the data-bound control is loaded again. Also, the data in the child control should retain their value on postback. What approach should i follow?
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Mar 17, 2010
How can I bind a datalist control with a list of objects. I have a list of objects that contain a name, desc, and url for menu commands that I am trying to show in a DataList. I am getting the list from a WCF service so I have a list called something like menuList which consists of a List<MenuCommands>. I then do a menuDataList.DataSource = menuList and then a menuList.DataBind but nothing is happening. What am I missing here? I need to use a DataList because I need the commands to be selectable.
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Aug 19, 2010
How can I get pass the DataKey of a GridView to a usercontol, preferably without code behind.
Why doesn't this work:
<ucOrderDetails:AJAX_OrderDetail ID="od1" runat="server" OrderNumber='<%# GridView1.SelectedValue.ToString() %>' />
GridView1 is just a list of orders with a DataKey of OrderNumber.
od1 is not inside of a databout control, does it need to be?
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Jan 24, 2010
I have a situation where I currently have a HyperLinkColumn control that I would like to modify to have a Label or simple text appear in the same column as the hyperlink. I tried setting this in the ItemCreated event but encountered the following error message
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Jan 5, 2010
I have a 3 level deep nested gridview. The expansion/contraction of each record was originally done with javascript. There were html <div> tags around each gridview. Since these were HTML div tags I could give them IDs that were dynamically bound to record ID value within the database. I then had onclick buttons that passed in a bound record ID value that coresponded to the appropriate div tag that needed to be expanded (e.g. display: inline (show it) or if it is already inline then display: none).
This worked beautifuly. Unfortunatley I wanted to be able to do in-girdview editing of the child records. When expands a parent record and clicks to edit a child record the OnRowEdit event fires which automatically generates a postback and resets the variables within the JavaScript. THEREFORE THE ENTIRE GRIDVIEW STATE BECOMES CONTRACTED.
So finally I decided to change the div tags to <asp: Panel> and the onclick images to .net clickable images (all .net objects no framework). This works because the state is remembered within each postback. However, the problem I'm having is I can't dynamically bind ID's for panel since this is not allowed. HOW CAN I GIVE THE PANEL <% Bind("id") %>. THAT I CAN REFER TO SO I CAN OPEN THE APPROPRIATE PANEL.
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Aug 27, 2010
Is there a way to create templates in an MVC 2 View User Control much like the ability of a Web User Control? or should I just use a Web User Control? With MVC 2, should Web User Controls be avoided?
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Feb 7, 2011
I need to create custom control. It should be able to use diffrent templates in runtime. I mean that from code behind I need to change template path. How can I do it?
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Aug 2, 2010
I've got a repeater control containing comments. I'm about to implement ajax paging to it. I was opting to use the updatepanel (conditionally) for this thing, but I guess it's going to get kinda slow in production environment (Each time about 20 rows will be visible). I want to keep the repeater control since it contains other controls as well so I can't use a js (templates)/json approach.
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Oct 17, 2012
How to define/modify Ajax Control Toolkit Twitter templates (LayoutTemplate, StatusTemplate, AlternatingStatusTemplate and EmptyDataTemplate)?
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Dec 7, 2010
I need a way to define a template that the control should render before each item..I currentky have the following code:
[Code]....
But Im kind of unsure about where to place the following code:
[Code]....
Since I whould like the template defined in the BeforeItemTemplate to always get added before the actual Item/<asp:MenuItem>..so I can add elements before and after each MenuItem..
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Apr 2, 2013
I have used a dataList control in my project to display the comments posted on an article.
I want to add an delete option for deleting comments of the article.
<asp:DataList ID="DataList2" Width="700" runat="server">
<ItemTemplate>
<p> <asp:Label ID="LCommentby" runat="server" Text='<%# Eval("Commentby") %>'></asp:Label>:<br />
<%# DataBinder.Eval(Container.DataItem,"Comment") %></p>
<p class="meta">
<asp:Label ID="LDate" runat="server" Text='<%#Eval("Date") %>' /><asp:Button runat="server" id="DeleteComment" Text="Delete" />Â </p>Â <hr />Â </ItemTemplate>
</asp:DataList>
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