Forms Data Controls :: How To Load User Control Data In A Datalist
Jan 6, 2010
I have the follow code (i just listed the parts that might be the more important to understand my problem):
(Code Behind)
[Code]....
(Page .ascx)
[Code]....
The user control RatingControl shows the rating and the number of rates, the user control Pager is responsible for raising CurrentPageChanged when the page changes and BindData() is a function
that binds data to the Datalist control.
When the page is loaded for the first time BindData() marked with ** is executed , thereafter i only want to load data when the event CurrenPageChanged raises.
So far so good, but the problem is when the CurrentPageChanged is raised and call the BindData() function, the user controls are not loaded properly, and things that i can't understand happen, like the user controls not receiving the properties initialized when they are loaded, but the other controls inside the Datalist like lblDescription are loaded correctly with their data.
Summarizing, the user controls are not loaded correctly in this particular case when the DataBind() is called by an event.
I already searched in the internet, and i read about page life cycle, user controls and i still didn't understand why this happens and how to fix it.
View 1 Replies
Similar Messages:
Jan 2, 2011
I have 2 nested datalist that one of them is menudatalist and the other is submenu datalist. whenever I click on my submenu items a dynamic user control should load in dynamic tab. my problem is : one of my usercontrols that is JQGRID does not load in tab and when I click on that submenu Item an empty tab is created,however other user controls are loaded in tabs correctly.would somebody please help me to solve this problem?
View 2 Replies
Feb 24, 2011
I have DataList control and I want to assign to it's edititemtemplate some User Control. The problem is I can't find when I should databound UserControl to data, as my UserControl doesn't have static look (it renders different depending on some property values and datasource).
I was try to simply set my user control in edititemtemplate
<EditItemTemplate>
<uc:MyUserControl id="myUserControl1" runat="server" />
</EditItemTemplate>
and then bind it to data in ItemDataBound event handler, but it remains empty
if(e.Item.ItemType == ListItemType.EditItem)
{
var p = (Pair)DataBinder.GetPropertyValue(e.Item.DataItem, "Key");
((AnnouncementUserControl) e.Item.FindControl("userControl1")).RepeaterDataSource =
_templateWorker.ReturnTemplateByAnnouncementId(Convert.ToInt32(p.First), true);
}
how can I databound my control, or another approach which will make me avoid this problem?
View 2 Replies
Dec 23, 2010
I have a datalist that loops thru cart items. Within the datalist template I call a user control that has a small form that gets repeated for each item. When this control is called outside of the datalist, the form submits fine, but when called within the datalist the button has no event action. I've tried adding an event handler to ItemDataBound of the datalist, but still no event action. How can I get my form to submit?
View 8 Replies
Mar 17, 2010
Im working with asp.net web application,I need to get multiple gridviews dynamically based on the count (which i get from database) for that i took a web user control and i added a gridview there . iwant to load that usercontrol in aspx.cs based on the count..
but im able to bind only one grid view...
View 14 Replies
Feb 14, 2010
I have a photogallery.But I need to load 5 images when the the datalist loads up.
View 3 Replies
Sep 3, 2010
i use the next datalist:
[Code]....
[Code]....
but show me this error:
Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
View 3 Replies
Sep 13, 2010
This is the problem. My datalist, which connects to an Objectdatasource (I implemented custom paging) becomes populated with data only half of the time. When I go to the aspx page which contains that datalist (from another page), sometimes, the datalist fully loads, but sometimes only the header shows up. The header just contains hard-coded text whereas the body (itemtemplate portion) contains things that are binded to the objectdatasource. I thought I would mention this since the problem might have something to do with how things in asp.net bind.
The strange part of this is that when I was testing and debugging within VWD 2010, the datalist loaded fully everytime and I had no issues. When I placed my files on the IIS web server, this is when the problems started happening.What could the problem be? The speed of the IIS web server vs VWD's "internal server"? My page_load, init_load, etc methods are empty for this aspx page. The datalist is solely handled by the objectdatasource_selecting method. Should I explicit call something from one of those early lifecycle methods to ensure proper datalist loading?
View 5 Replies
Sep 20, 2015
I have read and referred your range slider and loading infinite images on scroll.The issue is when combining both the article the data is appending to old one.
View 1 Replies
Apr 14, 2010
I've got a few labels in a datalist that are being populated based on the values of a queryString but without the query string the datalist is empty.
How can I access the labels in the datalist and set a default value to them on the load of the page?
View 14 Replies
Jan 8, 2010
i want to bind data to html page using datalist control ...
or is there another way to bind data to simple html control ....where i am feching data from sql server ...
View 2 Replies
Sep 20, 2015
[URL]
the above link for Create GridView with TemplateField and asp control for Load images while scrolling page down with jQuery.in above link code we can show only one image in one row
but datalist have ReaptColunm to set 3-4 according to ur need
when i used above code for datalist its not working .when scroll down it bind duplicate value.
View 1 Replies
Jun 24, 2010
I have a test page that I am trying to add a custom control (articleWUC.ascx) and set its properties to some results from SQL. I followed several guides including this [URL] with no luck.
My test page includes two data lists one that works without dynamic creation via custom templates and the other using custom templates.
Test.Aspx.CS
[Code]....
Test.aspx
[Code]....
articleWUC.ascx.CS
[Code]....
View 3 Replies
Apr 15, 2010
I'm getting an error message: Object reference not set to an instance of an object.
Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error: [Code]....
I am trying to bind my dataset to a datalist. I know I can use a databind methed but Im also trying to do something else like modifying the dataset. What I want basically done is, if the user is not signed in, it will populate my datalist which is mostly checkboxes with texts. But when the user is signed in, i want his history of his checkboxes that was save onto the database.
[Code]....
View 3 Replies
Dec 6, 2010
Finding DropDownList Control Within DataList Control?
[Code]....
[Code]....
<asp:LinkButton ID="AddBtn" runat="server">Add Committee</asp:LinkButton>
</FooterTemplate>
</asp:DataList>
View 1 Replies
Nov 15, 2010
The problem is that i have a search page. Access Database holding the information. I have a Access Datasource on the page with a Datalist to show the data. I need to find a way on setting it up to says "Sorry no results found" when the is no results. i am unsure on how to do this though.
Below is my datasource and datalist
[Code]....
View 6 Replies
Oct 20, 2010
I want to get control's value in DataList but I can't.
I tried to use FindControl() but still have error ("
Object reference not set to an instance of an object.
")
this is my code (
string id = ((HiddenField)DataList2.FindControl("hfID")).Value;
)
View 2 Replies
Dec 15, 2010
how to set pagination using datalist control in asp.net.
View 2 Replies
Mar 3, 2011
I am pulling states from a database. When I get to "district of columbia" I would like to change the result to "washingtondc".
Can this be done from within the contol? A basic IF THEN? How do I go about it?
View 3 Replies
Jan 11, 2011
How to set paging in datalist control using asp.net+C#.net?
View 6 Replies
Nov 3, 2010
How to do paging in datalist control
View 1 Replies
Feb 18, 2010
The data that shows up in my DataList does not align to the top. How do I align my data to the top? It looks to me that the data is center in the middle vertically.
View 6 Replies
Mar 13, 2011
I am using datalist control on Default.aspx. In that datalist control I have ASP Link Button and the data is fetched from the Database while loading the control. Now, When my user clicks on that particular Link Button, the data associated with it should be shown on the next page. Which event shall I use? How do i select the values that I would show on the next page?
[Code]....
View 7 Replies
Jan 18, 2010
i have an datalist and some controls are in itemtemplate in it, what do i do if i wanna remove specific control in datalist ?i try to use event Itemdatabound to remove control but nothing happenshere my code in aspx.cs :
[Code]....
here code in aspx
[Code]....
i have a Image control , and when ImageUrl is empty , i will remove it.
View 2 Replies
Oct 18, 2010
I cannot dig out the controls correctly in my code, as they are hidden in a datalist. I am trying to update some data into a row in the 'resume' table. Is INSERT INTO corrent for updating data which is already there?
and also i cannot find the controls in the datalist correctly....?
protected void LinkButton2_Click(object sender, EventArgs e)
{
string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
System.Data.SqlClient.SqlConnection sqlConnection1 =
new System.Data.SqlClient.SqlConnection(connectionString);
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.CommandText = "INSERT INTO resume (confirmed,comment,reference) VALUES (@confirmed,@comment,@reference) WHERE number = @number";
cmd.Parameters.AddWithValue("@number", DataList1.FindControl("picturesLabel0").Text);
cmd.Parameters.AddWithValue("@confirmed", DataList1.FindControl ("RadioButton1").SelectedValue);
cmd.Parameters.AddWithValue("@comment", DataList1.FindControl ("TextBox3").Text);
cmd.Parameters.AddWithValue("@reference", DataList1.FindControl ("TextBox4").Text);
cmd.Connection = sqlConnection1;
sqlConnection1.Open();
cmd.ExecuteNonQuery();
sqlConnection1.Close();
View 3 Replies