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?
View 1 RepliesHow 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?
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)?
I'm attempting to create a simple menu user control just as outlined here.
The attached code results in an "Object reference not set to an instance of an object" error, but I can't figure out why.
<%@ Master Language="VB" CodeFile="MySite.master.vb" Inherits="MySite" %>
<%@ Register src="Controls/Menu.ascx" tagname="Menu" tagprefix="my" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">......
how to create unlimited user control without losing the data... My problem is on postback.. i searched a lot but m not get solution.. my question is how to recreate unlimited controls(textbox,dropdown) and how to maintain the data in the controls.. Now am able to create dynamic usercontrol (unlimited) when Button click event using for loop but not able to maintain the data during postback.
View 1 RepliesI have a web app hosted with GoDaddy (so the web server is in Arizona - Mountain Time). My users are mostly in Central Time Zone, but I could have some from other time zones. I have a web page with a databound dropDownList using TimeZoneInfo, and I want to set the selected value of this dropDownList to whatever timeZone the user is in. Here's my code currently:
protected void Page_Load(object sender, EventArgs e)
{
DropDownListTimeZone.DataSource = TimeZoneInfo.GetSystemTimeZones();
DropDownListTimeZone.DataBind();[code]....
It's ok, but I want it to be smarter for those users who aren't in CST. I was hoping there is some way to grab the user's TimeZoneInfo from something like Page.Request.??
I want to create user control for gridview paging, so it may be reusable for every grid in my application, my user control should be like below, how its possible
eg: previous 1,2,3,4,5,6,7,8,9,10 More If i clicks more link next 10 pages of records should be visible, how its process?
I am trying to implement a nested user control in listview and the user control doesn't get bound.
Here is my code.
[Code]....
I am trying to create a web page, that use a user-control (the user control is win-form).I am getting the message : That assembly does not allow partially trusted callers.I put the dll on c:windowsassembly, but I don't know why I getting the above.Here is my code
[code]...
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.
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.
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.
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.
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?
View 2 RepliesI used the Create User Control to make a new user.
Is there a similar tool (I did not see one) that allows the user to edit their own profile?
If not what is the best way to do it? I have created user tables in AWAT.
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"?
I have a ListView control that is bound to an SQLDataSource.
View 6 RepliesI 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?
View 7 RepliesHow 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.
View 11 RepliesHow can I get all the textboxes inside a create user wizard control using getElementsByTagName().
Below is my JQuery code:
[Code]....
The above code isn't displaying hint text when the textbox retreives focus.
I think there is something wrong with this getElementsByTagName("asp:TextBox"); , I have also tried getElementsByTagName("TextBox"); , getElementsByTagName(":textbox"); and getElementsByTagName("input"); .
But no one of them gets the textboxes array.
Can anyone tell what will be the correct syntax for getting all the textboxes inside a create user wizard control using getElementsByTagName()?
I want to put a Login Control and a Create User Control on the same page.. just wondering, before I start am I going to run into any problems by doing this?
View 2 RepliesI 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
View 3 RepliesI 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.
I know how to use ITemplate to create a user control where it looks something like this:
<cust:control id="" runat="server">
<template>
random content...
</template>
</cust:control>
however, i am wanting to make a menu like control, and need a more specific setup. i dont need a template section, however, i want to create something where the user control can have only certain elements (which are also user controls). the best way to describe this is by example i think. this is what i want to create for my user control template:
<cust:control id="" runat="server">
<cust:contolItem id="" runat="" blah="" blah="" />
<cust:contolItem id="" runat="" blah="" blah="" />
<cust:contolItem id="" runat="" blah="" blah="" />
</cust:control>
the outer control is a user control, and inside its tags it can have other user controls (limited to what is defined in the outer controls code). all of the 'children' in the outer control would then be rendered on the outer controls page markup as if it were templated.
I just can't figure out how to approach this, but this is what I want, would be I have a database-table containing an XML-field. Using LinqToSql I succesfully bound this table to a GridView and a DetailsView control.ow I wrote a WebUserControl that renders a bunch of textboxes, and has a method 'Serialize' that returns the XElement-object that I can use in my codebehind to assign it to the LinqToSql-property to save it to database. It also has a public property 'Xml' (type string) that I can use to Bind() the xml-string from the database to it, so the WebUserControl can prefill it's textboxes.
View 1 Replies