Forms Data Controls :: Datalist Control Bound To List Of Objects?
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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Nov 17, 2010
have some Objects, lets say Employee and Role defined as below and I have defined relationships in my database that gives me a list of objects say employees and thanks to my framework each employee object also has a Role object linked via the RoleIDID, UserName, Password, Email, RoleIDRoleID, RoleNameSo in code I can do something like this
Employee emp = dataService_GetEmployeeByID(1);
string RoleName = emp.Role.RoleName;
Now here is my problemI can bind any object in a repeater and it works fine for the first level in my relationship
For instance <%# Eval("UserName") %>
But I need to be able to show the details for my child objects as well (Role) so something like this (which does not work)
<%# Eval("Role.RoleName") %>
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Apr 6, 2010
I know how to bind a simple objects to a dropdown list. However I am having problems binding my objects which contains sub objects to the control.i.e. with simple object i just do ddl.DataValueField = "myproperty"
with my objects they contains sub objects which i want to bind. I have tried ddl.DataValueField = "sub-object.myproperty" which doesnt work.
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Feb 8, 2011
DLRepository is a class with method getDLandRules. I am binding the gridview with the list that is returned by method. Now I would like to iterate through the list and add 1 more column to each row that is returned. currently, I am getting an error
GridView1.Rows[row].Cells[7].Text 'GridView1.Rows[row].Cells[7]' threw an exception of type 'System.ArgumentOutOfRangeException' strin
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Jan 31, 2011
I have a databound FormView with a dropdown list of categories. All works as expected, but I want to provide the facility for the user to add a new category to the list and I can't find an elegant way to do it. My current approach is to have a simple modal popup (Ajax toolkit) with a FormView (bound to the Categories table). That successfully inserts the new row, but it doesn't show in the dropdown so it can't be selected. I can force a refresh by calling formview.DataBind() in a suitable event handler, but that of course moves the formview off the selected record and loses any changes the user may have made.
Is there a convenient way (perhaps using AJAX, avoiding a postback entirely) to update the Categories table and refresh the dropdown without moving off of the current FormView's record? I feel sure this
must be a frequent and basic requirement, but I've not found any mention of how to implement it.
[ASP.Net 4.0, by the way]
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Feb 5, 2010
I have a List of Customers. Now I want to display these customers in a gridview and that is easy. I just set the datasource and use the databind method of the gridview. (I use template fields). But now I want to display FirstName and LastName of the customer as one column.I am aware of how to use the rowdatabound event to manipulate the gridviewrow's controls, but I am not sure how to gain access to the customer object within this method.So here is some code which of course not works.
protected void grdVirtualCustomers_RowDataBound(object sender, GridViewRowEventArgs e)
{
System.Web.UI.WebControls.GridViewRow row = e.Row;
((Label) row.FindControl("lblName").).Text=Customer.FirstName + " " Customer.LastName;
}
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Jan 21, 2010
I have this grid view
[Code]....
The first page show up just fine, when i try to go to the second page of the GV i get this errorThe GridView 'GVCreditMemos' fired event PageIndexChanging which wasn't handled.
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Aug 21, 2010
I have a generic list of a custom type. The custom type has a string and double.I'm binding the list to a gridview and it outputs everything fine.I'm trying to format the double column into a currency format. It is in a template field as I'm calculating a running total. I pass the value to a function that returns a double and adds the current value to a running total which I will show in the footer.
The format is not changing to currency as expected when using String.Format("{0:c}", GetTotal(Convert.ToDouble(Eval("Amount"))))
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Feb 16, 2010
I'm creating in my code a list of object which must be displayed later in a table.
In Winforms I'd simply bind the DataGridView to the list, and everything is fine.
However, when I try to set the GridView's data source to the list, nothing happens, and I can't find a way to do this with any of the procided data sources(Such as ObjectDataSource, etc.).
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Jun 28, 2010
As a workaround for the fact that asp:Checkboxes don't have values, I am attempting to dynamically create the ID's of checkboxes in a DataList so that it inserts the primary keys into the control ID. This is surprisingly difficult.
I have placed a PlaceHolder in my DataList ItemTemplate, then in the ItemCreated I create the checkboxes using string.Format("Checkbox{0}", DataBinder(e.Item.DataItem, "ID")). The problem is that this only works in a non-postback condition, as on postback the DataItem is null. And of course ItemDataBound isn't called on PostBack so that won't work either.
I can't seem to find a good way to handle this short of if (IsPostback) dataList.Bind(), which i don't think is a good way to do it.
Can anyone provide me with any alternatives here?
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Apr 21, 2010
I'm tyring to bind a list of Dictionary objects to ListView, but for some reason it returns me an error, ItemTeplate
[Code]....
Code Behind
[Code]....
error says
[Code]....
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Jan 21, 2010
Which is better from the performance point of view Wizard Bound Controls or Binding Controls by manual ADO.NET Coding?
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Jul 5, 2010
I have a ListView control that is bound to an SQLDataSource.
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Jan 7, 2011
I have web form and on it I have a DataList that is grabbing some Data from a Database and displaying them as a list.However when I look at the HTML Source Code produced, it's all Tables ! <td> and <tr> !!
How can I stop this ? I want my DataList to display the data like so:
[Code]....
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Jan 13, 2010
In a two column table I have a datalist pulling questions from a sql table in one and a dropdown list showing options for people to choose in the other.It all works well.The issue I have is with the formatting, since some questions span two lines, the dropdown list does not match the questions all the time. How can I make sure the dropdown list matchs the questions?I have valign=top on both cells.Do I need to reformat the datalist? I tried putting a dropdown list in a datalist cell, but that did not work.
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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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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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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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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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May 16, 2010
I'm trying to move to a DataList control of a dictionary list
Dictionary <string, List <string>>
where should I insert the key and the list nell'HeaderTemplate nell'itemTemplate, but I do not know how.I tried to create the ItemDataBound event:
[Code]....
but it gives me error code sula first lien and tells me that there is no reference
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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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Mar 25, 2010
I have just run into a situation with a FormView control where any markup that is not given an ID and runat=server attribute is NOT rendered to the browser.
In other words, all of the extranneous markup (h#, fieldsets, legends, divs, labels, etc.) that are in my Edit Template DO NOT render to the browser at run-time. However, if I add an ID to any of those items and add runat="server" then they are rendered.
Has anybody every seen anything like this? Does anybody know what could possibly cause this?
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Dec 6, 2010
Finding DropDownList Control Within DataList Control?
[Code]....
[Code]....
<asp:LinkButton ID="AddBtn" runat="server">Add Committee</asp:LinkButton>
</FooterTemplate>
</asp:DataList>
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