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?
i want to use a Datalist to list products from sqldatasource. When i select the Product i would like to retrieve the associate Product value in the code behind page so that i may use it to display data in Grid.
View 8 RepliesI'm creating user controls that i will put into an update panel and make them visible only when required using triggers. Once visible it will float in a dialog box so it has a close button which will just hide the control on client side.
The controls have multiple post back states, like a wizard, i'm using a multi view control to accomplish that. My problem is that once the user is at step number two in the control, if the user closes the dialog, than opens the dialog again, (note that the control is made visible on the server and reloaded by updating the updatepanel) the second step will still be displayed. The reason is . because whenever there is a postback the control will load its state using the viewstate, even if EnableViewState is false it will still load it using the LoadControlState method. so my quesion is how can i force a user control to load fresh with its default values without any postback data.
I need a way to change the ActiveViewIndex of a multiview control based on some query results. Right now I test to see if I have rows returned from my linq query. If so, set a certain view active. If no rows are returned, I would like to set a different view active. I would like to do this on Page_Load if possible.
Right now I get the fatal "Object reference not set to an instance of an object" error on page load with it bombing at line 12. My count is given a value at runtime so that is not the issue. Can anybody tell me why this is and how to get around it. Code is attached.
I also tried this both the pre render and Page_Init event but both yielded the same behavior with the Object reference not set to an instance of an object error. I can do this just fine in an onclick event for a button, but now I need a way to run a test and set the default view when the page loads. Seecode below
protected
void Page_Load(object sender,
EventArgs e)
{
eCrystalPSGDBDataContext psgDB =
new
eCrystalPSGDBDataContext();
int count = (from st
in psgDB.studyTbls
where st.patientid_i ==
Convert.ToInt32(Request.QueryString["PatientId"]) && st.studystatusid_i
== 1 select st).Count();if (count == 0)else
if (count == 0)
{
StudyInfoMultiView.ActiveViewIndex = 1;
}
else
{
StudyInfoMultiView.ActiveViewIndex = 2;
}
}
A few questions regarding detailsview and gridview:
1) when page load, how can I default the detailsview to show the first record from the gridview? SelectedIndex does not have any effect to my detailsview.
[Code]....
2) how can I select a record in the gridview if my table has 2 key fields using below syntax?
[Code]....
How To get Datalist Checkbox Select Item To The Another Datalist on click CheckBox
Code Like
<form id="form1" runat="server">
<div>
<h2 style="background-color: #CCC; font-size: 16px; font-family: Arial, Helvetica, sans-serif; font-weight: 400;" class="heading">Brand</h2>
<asp:DataList ID="DataList5" runat="server" Style="font-weight: 700; color: #CC33FF; background-color: #66FFCC;" Height="100px" Width="122px">
<ItemTemplate>
[code]....
I am using the code provided on the web portal for nested gridview and its working fine too.
But I want to make the child row expanded on the first page load how to do that..
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 RepliesUpdates to the edited item are not passing the new / updated values but rather the original values. And I can't for the life of me figure out why when I change the original value in an edit textbox and post the update the new value is not being passed. I get the original value. Perhaps fresh eyes can spot the problem. This should be super basic but apparently I'm missing something.
Here's the code for the Item and Edit templates. The code behind is below this.
[Code]....
Code behind begins here....
[Code]....
For example in my datalist if Eval("OptionJ").Tostring = Null I would like the function GetVisible to set visibility of the radio button to false like so:
<input name="Q<%#Eval("ID")%>" type="radio" value="J" visible="<%# GetVisible(Eval("OptionJ").ToString()) %>">
<%#Server.HtmlEncode(Eval("OptionJ").ToString())%>
</option><br />
I then have a codebehind function like so:
Protected Function GetVisible(ByVal Evalresult As String) As String
If Evalresult = Nothing Then
Return "False"
Else
Return "True"
End If
End Function
I have also tried checking EvalResult = String.empty
In the outputted html the visible status is being set to false...
<input name="Q3" type="radio" value="J" visible="False">
But it is still displayed on the page!
i'm using Datalist for to display images from database. I made by this tutorial [URL]. How to delete selected image from sql server?
View 6 RepliesI have a webform that functions as a kind of a timesheet. The way it works now is that a user selects a project from a dropdownlist, the enters a date and the amount of hours worked. After that the user selects the link button "register" and the worked hours are registered and the result will be shown in a datalist (for each project a new one). Is there some possible way to show a user in advance all the projects he is authorized for in a datalist or so, so he can fill out the hours for all the projects at once? Now the selection for a project from the dropdownlist is a problem for some users cause they have a lot if projects and it is quit a workload on the manor now.
View 3 RepliesI have a DataList called Books on my form. If the Genre is Mystery, I want the TableHeaderCell to be a different color. The BackColor is set by default to: #66CCFF.
How do I access this control in the code behind? I want to be able to say:
[Code].....
i'm using datalist to display product details.
every item in datalist contains...
product image, quantity, details button, and add to cart button
my requirement is whenever someone selects the quantity textbox or edits it the default button for the page should be add to cart button.
or add to cart button should be clicked itself whenver enter button is pressed from keyboard.
Loop through Datalist and get values of non-control items( cell values?) on button click
for (int i = 0; i < datalist1.Items.Count; i++)
{
datalist1.Items[i].
}
Name: '<%#Eval("ElementName")%>'
wanna access elementname... by looping through datalist on button click event... button is not on datalist
i amusing this datalist
<asp:DataList ID="dlsearch" runat="server" OnItemCommand="dlsearch_ItemCommand" RepeatDirection="Horizontal" OnItemDataBound="dlsearch_ItemDataBound">
<ItemTemplate>[code]....
and on itemdataboundevent change the font size but it is no changed font size
protected void dlsearch_ItemDataBound(object sender, DataListItemEventArgs e)
{
LinkButton lnkbtnPage = (LinkButton)e.Item.FindControl("lktag");
HiddenField h_count=(HiddenField)e.Item.FindControl("h_count");[code]....
i have div control.... inside i am having datalist control .but i want to make all datalist items with same size and spacing between items should be the same. whatever width of the div tag .but no. of items should be adjusted in that area i have repeatcolumns =3 but it could be any no. so it should get adjusted. i have list of images to be display in datalist.
View 1 RepliesThe 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]....
I have a photogallery.But I need to load 5 images when the the datalist loads up.
View 3 Repliesi 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.
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?
I have a datalist, this datalist control is bind, when user select control filters,i am looking a way to sort this datalist control for example like asc or desc or price.
View 1 Replies i need to get the a label value to string, but i am struggling. here is the code
string courseID = DataList1.FindControl.("courseIDLabel").ToString();
but this statement is flowing errord
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.
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
