I am trying to bind xml to GridView.
I am not able to use Xpath in HeaderTemplate like <HeaderTemplate>'<%#XPath("Name")%>'</HeaderTemplate>
Error: Value cannot be Null.
Well, how to I insert my Xpath value into HeaderTemplate from Serverside?
I m working on DataList. I have added one DropDownList in HeaderTemplate od DataList
[code]....
I have a dropdownlist in a headertemplate but I can't seem to access it in the code behind to work with the onselectedindexchanged event. I want to change the data that is shown on the event but can't access the control.
View 2 Replieshow to create a gridview template
with text box
From
To
Company
Profile
[Code]....
FromToCompanyProfile
[Code]....
xml File
[Code]....
I think I am struggling with something that may not be entirely relevant to XPath, but this is the function I am trying to use. I have a code snippet here that works,
[Code]....
It prints out: Items for page 1 is: 1 to 10. What have I missed here regarding this issue?
Probably a fairly simple one. Just need to know how I can make reference to controls in the HeaderTemplate of a DataList. I've got a form in there that I need to get the data from.
View 2 RepliesI have an imagebutton control in the column HeaderTemplate of a gridview and want to know how to reference the imagebutton so I can add an attribute to it programmatically. Following is the code for my gridview control:
[Code]....
I can reference the checkbox control correctly with CheckBox chkbox = GridView1.FindControl("chkSelected") as CheckBox;However, I have tried the following code for the imagebutton but I get the error message Object reference not set to an instance of an object.:
[Code]....
Or is the OnInit event handler the right place to reference the control?
I have a big problem...I have made a page has a Data FormView controland the insert template of this Formview control has DropDownList to allow the user to choose section (SectionsDDList)..and there's also another DropDownList allow the user to choose a teacher (TeachersDDList)...more infothe SectionsDDList get the section list from SqlDataSource control which the "Select Command" of is:"SELECT section_id,section_id FROM sections"the TeachersDDList get the teachers list from another SqlDataSource control which the "Select Command" of is:"SELECT teacher_id,teacher_name FROM teachers WHERE (section_id = @section_id)"finallyI want the TeachersDDList to be filled with teachers according to the selected section from the SectionsDDList...So,I enable the Auto postBack function of the SectionsDDListand add the next code for the SectionsDDList_SelectedIndexChanged event:TeachersDataSource.SelectParameters["section_id"].DefaultValue = ((DropDownList)sender).SelectedValue;be aware that both of the SectionsDDList & TeachersDDList have been Bounding to a column...and the problem I have faced is that:Exception Details: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.maybe you want to know the Stack Trace:[InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.]
System.Web.UI.Page.GetDataItem() +93
System.Web.UI.TemplateControl.Eval(String expression) +33
ASP.cpanel_managecourses_aspx.__DataBinding__control82(Object sender, EventArgs e) in
[code]...
I' Trying to find the control i Repeater <Headertemplate>Â and I got this error "Specified argument was out of the range of valid values.
((Label)Repeater Created. Controls[0].FindControl("lblHeader")).Text = "sample";
In article [URL] .... I want to change the header Styling. Is it possible to change?? If yes then how?
Also, i want to use label inside header (to write heading).
I am using an event calendar control (not a MS control) and I am trying to access a LinkButton inside this control's HeaderTemplate. Below is what I have tried so far. I get the familiar "Object reference not set to an instance of an object" error. Does anyone has an alternate way to get this control? I need to change the visibility property of it.
<ec:EventCalendar runat="server" ID="eventscalendar"...
<HeaderTemplate>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td style="text-align: left; width: 33%; font-weight: bold; font-size: small; color: blue">
«
<asp:LinkButton ID="PrevMonth" runat="server" Text='Previous Month' CommandName="PrevMonth" />
</td>
...
</HeaderTemplate>
LinkButton PrevMonth = (LinkButton)form1!eventscalendar.FindControl("PrevMonth") as LinkButton;
LinkButton PrevMonth = this.FindControl("form1!eventscalendar!HeaderTemplate!PrevMonth") as LinkButton;
Scenario:
I am creating a custom gridview control which has a custom CheckBoxTemplateField column (deriving from TemplateField class). This template field column has custom Checkboxheadertemplate (implementing ITemplate) and CheckboxItemTemplate (also implementing ITemplate). In InstantiateIn method of both templates (header as well as Item template), I am adding a checkbox control which has Autopostback = true.
My requirement is:
I want to mark all the values in the binding column of datasource if checkbox in headertemplate is checked. I dont want to mark only rows visible on grid. I WANT TO MARK ALL ROWS IN DATASOURCE. I want to do this in _CheckedChanged event of checkbox in header template.
Problem I am facing: When I check/uncheck the checkbox in header, it postbacks. so in OnCheckedChanged event, gridview's datasource is null. Secondly, in any event of gridview, I could access only those rows of datasource for which corresponding rows are visible in gridview through Gridviewrow.DataItem property. But I want to set it for all rows in datasource.
I have a XMLDataSource somewhat like:
<bookstore>
<author>author1</author>
<publication>publication1</publication>
<book>
<genre>Thriller</genre>
<name>ABC</name>
</book>
<book>
<genre>Romance</genre>
<name>XYZ</name>
</book>
<book>
<genre>Horror</genre>
<name>000</name>
</book>
</bookstore>
I am storing these in a asp:formview. I am able to store author and publication values but not sure how can I store the value of book/name based on some condition? Actually I just want to use condition that I need to store the value of "name" if "genere=Romance". something like this. I tried using XPath expression bookstore/book/genre[. ='Romance'] but not sure how to access the value of tag. Checked the following resource:
[URL]
I'd like to learn how to create custom providers ( say custom membership provider or custom profiles ) that use XML as their data store. Is ( using C# ) best way to accomplish this using XPath/XSLT or DOM?
View 1 RepliesI'm currently experiencing issues when I try to update the text value of a label. The label is located within a HeaderTemplate. The HeaderTemplate is within a Wizard control. why I'm uable to access it directly or with using findcontrol?
I believe that Findcontrol returns back a null when I go that route. Here's a code snippet below of what I'm working with. I'm trying to update lblCurrentJob with text that changes based on what the user selects on my page.
[code]....
I have a traffic rss feed which I want to filter when a user enters some text in the text box. For example, if the user enters “Leicester” in the search box then only data containing “Leicester” in the “Tile” OR “Desscription” with be displayed.
<asp:DataList ID="dl_traffic" runat="server" DataSourceID="Xml_1" style="font-family:Arial;font-size:14px;margin-left:2px">
<FooterStyle BackColor="#CCCCCC" ForeColor="Black" />
<SelectedItemStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" />
<AlternatingItemStyle BackColor="White" />
<ItemStyle BackColor="#EFF3FB" ForeColor="Black" />
<HeaderStyle BackColor="#000084" Font-Bold="True" ForeColor="White" />
<ItemTemplate>
[CODE]
I have a Detailsview header template as follows:
Code:
<HeaderTemplate>
<%#Eval("Name") & " " & Eval("Surname")%>
</HeaderTemplate>
I want to change the header template, when the admin is logged in to:
Code:
<HeaderTemplate>
<%#Eval("Name") & " " & Eval("Surname") & " - " & Eval("PersonWhoInputData") %>
</HeaderTemplate>
It has to be done programatically.
How to do that?
Do I have to use XPath to link my XML document to a repeater or is there another way. here is my some of my code.
first page loop through data and store as XML:
public virtual void Button_Click(object sender, EventArgs args)
{
TableControl recControls = (TableControl)this.Page.FindControlRecursively("TableControl");
if (recControls != null)
{
TableControlRow[] rows = recControls.GetSelectedRecordControls();
this.Page.Session["RegistrationTableControl"] = rows;
// create XML writer to
using(System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(@"c: emp
[Code]....
I have take the XML data and place them in page 2 become the data source of the repeater.
The header text in the tab panel is too small and I wanted to make it bigger. So I included a <span> within the <HeaderTemplate> tags and though the text is larger according to the style of the span it doesn't display properly because the height of the tab (not the panel but just the tab part that sticks above the panel) doesn't become any bigger and I don't see where I can modify this.
View 3 RepliesI got this question from programming asp.net and web-site called quickstart.asp.net.In this it is mentioned that xpath and xpathselect is how used and syntex but it is not mentioned how it differs in work, i ckecked but both are giving same result.
View 1 Replieshere my code that gives error-
OnClientClick='javascript:DragRevId(<%# XPath("ReservationId") %>);return false;'
how to set alignment of label in HeaderTemplate in individual column in gridview in asp .net?
View 1 RepliesI am using HovermenuExtender with the Repeater control.
All is working fine with
<ItemTemplate>
but my problem is that i want to show
<HeaderTemplate>
, how can i do this ??? is this possible.
I'm creating page to put together a list of cinema trailers on an asp.net web page inside of a repeater.
The source of the data is an online XML feed.
To do this I'm binding the repeater as follows...
string XML_FEED_URL = "http://some-cinema-feed.com/comingsoon/";
XmlDataSource data_source = new XmlDataSource();
data_source.DataFile = XML_FEED_URL;
data_source.XPath = "/movies/movie[position() > 0 and position() < 3]";
this.moviePreciewsRepeater.DataSource = data_source;
this.moviePreciewsRepeater.DataBind();
The issue is that the length of the feed changes regularly and rather than selecting a range of movies with the XPATH (i.e. 1-3 in the XML) I need to select 3 totally random movies from the XML and bind this back to the repeater.
how to create a web site using c#(not used asp.net) ,xml,xsl,xquery ,xpath ,jquery
View 3 Replies
