I dont understand why this doesnt work
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The server produce an error that says that I must establish the property ID to itemPlaceHolder in a control of the ListView.... but I have done this !!!
I'm trying to check dynamically generated "checkbox" value inside Listview.
I can reference non-dynamic checkboxes exact in same location (index) inside Listview using "e.Item.FindControl", however I can't reference dynamic checkboxes.
Here is my code.
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Background: I'm populating lots of asp.net c# GridViews and ListViews from a database and subsequently users may export them to Excel. I want export as native Excel (not html). I can't use office automation, and I'm using JET which works fine. I have no control over users' machines. Question: When doing the export, you have to tell Jet what type each field is, in my case "text" (varchar) or "numeric" (double). The difference is that if you export a numeric column, the users can sum the data in Excel, where as strings are exported with a leading apostrophe and so are not much use in arithmetic.
Currently I parse the first data row of the Grid/ListView, check if each value is numeric or text, and assign a type to the column accordingly. That works, except for when I have something in the first column which looks numeric but in fact is a text string. I don't want to parse every row in order to be sure I have the correct data type as some of these exports are quite large. When I load the Grid/ListView from the database, the database certainly knows what type each field is. So my question is... how do I extract the type of the database item behind a a Grid/ListView item? I could explicitly code it as an attribute on the item, but that's duplicating information I already have, if only I can get to it. I know that where I have a DataTable then I can get the underlying type from that, but mostly I don't have tables handy, just the Grid/ListView. Note that Jet will throw if you try to insert an empty string into a nullable numeric column. The way to do this is to omit that column name from the insert statement, or output a zero.
i need to get data-bound items from outer listview to display in inner Listview, in this scenario:
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Where the higlighted text mean the title for outer datasource.
I am simply trying to change the listView template based on a value in the listview data. I do have this displaying the information correctly. Except when I try to change the item template based on a value in the listview. My code is below ....
View 6 RepliesI have a ListView, I've setup to use an ObjectDataSource, I've created my Layout and Item templates, and I'm able pull and view a list of my data no problem. However I want to add delete capabilities to my
ListView and my reference material tells me to go into the "Configure ListView..." option under the ListView's smart tag, the only problem is I don't have that option, the only three options in my smart tag are "Choose DataSource", "Configure DataSource..." and "Refresh Schema", what am I doing wrong?
I have anested ListView control. I also implemented a jQuery to automatically expand the TextBox control inside of the nested ListView Insert Template. The problem is, when the Textbox expand, the outer ListView control is not; therefore, the Textbox control expands underneath the buttons of the outer listView control. How do I expand the outer ListView control as the nested ListView textbox is automatically expand? One great example is in Facebook where if I add a response comment, it'll automatically push any comments below mine down. If nested Listview control is not the best way to do this, what are my options?
View 8 RepliesDoes anyone have an example for how to create a Dynamically Templated Listview with prefernces page to specify which columns & column order)? Also the listview would also have Edit, delete and insert options if possible. And uses the n-tier approach with Bus Layer and does NOT use LINQ.
View 1 RepliesIs there any way to enable alternative ListView (LV2) or any other control in case when ListView (LV1) returns no records from DB? I already have emptydatatamplate designed for this case, but I need to enable a new ListView below in this particular case and I don't know how to achieve this!
View 2 RepliesI try to datbind a listview which is inside another listview InsertItemTemplate.
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I'm binding the listivew in the parent listview onitemcreated events. I receive the error Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
I am having trouble finding how to solve the following issue :
I am using nested listviews to display Sales and Sales details.
The main ListView displays General Information about Sales and the child ListView displays the detailed information about one sale. the child listview is shown only when the user clicks on a link (see included code, DataBind is made on PageLoad) :
ASPX Markup Code :
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C# Behind Code :
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If I removed the datapager part, I can manage show/hide the child list view on the button click event. but if I want to use the DataPager with the PreRender event handling, the child listview is not longer shown on button click.
Ok, background first:
The form allows a user to create and edit one estimate.
Each estimate can contain multiple Jobs, which are represented in a ListView.
Each Job can contain multiple Parts, which are contained in a ListView that sits in each item of the Jobs ListView.
A user can add and remove as many Jobs as they want.
A user can add and remove as many Parts to/from each Job as they want.
I have no issues adding to each of these, but I do have a problem removing a single part from a single job.
For a reference, here is one Job in the Jobs ListView on the form:
I want to make sure that no matter what a user does, the part of the form they are working on saves what they have. Removing a row from that Parts ListView is no exception. What I want it to do is save the values in each of those textboxes and then delete the necessary row.
Here's what I have in the codebehind:
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The EstimateRow variable I create does not get a value from theListView)HFERID.Parent.FindControl("LVEstimateRow") bit of code. There must be another level of nesting that I'm not accessing correctly, because it can't seem to find that nested ListView.
I have a datakey defined on my outermost ListView. When I click on a linkbutton in a row in this listview, the second listview is displayed. This inner listview has several controls and also a linkbutton. When I click this linkbutton, it gets handled by its own event; linkbutton_click. In this event all the data is collected from the innermost listviews' controls, and sends it to the database. The only thing I need within this event is the datakey from the outermost listview.
View 6 Replieshow to do this when the checkbox in listview layout template check select all checkboxes in listview itemtemplate.I dont give 'Eval 'field to checkbox present in itemtemplate.
View 3 RepliesI have a table in the database for users with the columns FirstName, LastName, DateUpdated, UserUpdated. Now, I display the fields FirstName and LastName but the last to fields are just for internal record keeping. I don't want the user to see or be able to edit them. However, I do want the DateUpdated and UserUpdated field to be populated upon every insert and update. The user id is in the session and I just take the current date for the DateUpdated field.
My question is: How can I write the UserUpdated and DateUpdated fields without the user providing any values?I had a couple of ideas:
- Modify the DataContext class to automatically compute the values. Don't know if that's a good idea. Also, my changes will be overwritten when I re-generate the DataContext class.
- Create hidden fields that hold these vlaues. For instance: <asp:HiddenField ID="user_createdHiddenField" Value='<%# Eval("UserUpdated") %>' runat="server" />. But how do I actually assign a value to the field?
How to handle the itemcommand event for the inner listview, here is my code:
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I have a listview and a dropdownlist that is pulling from an SQLTable that I am using to insert data into the ListView, which is associated with the SQLTable. For the life of me I cannot figure out how to get this thing to not allow duplicate entries into the listview.
If I could get at the data that is inside the ListView I think my problem would be solved. At the moment all the code I have is to simply find if I can at least get the data down to something I can compare, from that step I will have no problem writing something functional, at least functional for my needs. I really could use a hand with this:
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I don't personally have access to the SQLTable, but I can have somebody make changes if this should/needs to be done from that end, but I would rather do it from this end in VB. I've been digging through the MSDN Libraries
Is there a benefit from putting a Tabcontainer control on a master page and setting up each of the tabPanels.ContentTemplates to be a content placeholder rather than putting everything into a regular .aspx page?
View 3 RepliesI am trying to populate the ListView using LinqDataSource data source but the issue I am having is.I need to load the listview on Search button click action.
IN the page_load I kept like this:
===========================================
LinqDS.Selecting += new EventHandler<LinqDataSourceSelectEventArgs>(LinqDS_Selecting);
protected void LinqDS_Selecting(object sender, LinqDataSourceSelectEventArgs e)
{
e.Result = ObjectDS;
}
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This works fine but this happens on page load,i want this binding to happen on button click?is there a way to do this?
I create a gridview dynamically to fit the contents of a datatable...This form will have other dataatbles thrown at it but for the moment I am only working on one to work out the details of the process.I will post all my code below...the problem is this. The code successfully geenrates the gridview the way I want however...whenever I select a row all the cells including the header cells dissapears
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I have a repeater that dynamically generates the sum of integers upon a button click (a random number gets stored in an sql database). The sum works fine and I get the appropriate output, however I would like to grab the sum and put it back into my C# code so that I can perform operations with it (it's the accumalated score of a game of blackjack so want to check if they are bust etc.) Here is my code:
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="SqlDataSource1" >
<ItemTemplate>
<label runat="server" > <%# DataBinder.Eval(Container.DataItem,"a") %> </label>
</ItemTemplate>
</asp:Repeater>
How do i grab the DataItem "a" and put it back into my code?
Just to be sure.. ive added a GridView and i was wondering if it was normal that it is generated as a floating element? Because, i had to use a clear: both after in order to write on the next line.. cause the text was displayed at the right of the GridView even with a <br>.
View 4 RepliesWhen I am setting the width of a column in a GridView I use the HeaderStyle-Width:
<asp:BoundField DataField="AnalysisId" HeaderText="ID" SortExpression="AnalysisId" HeaderStyle-Width="25px" />
<asp:BoundField DataField="AnalysisId" HeaderText="ID" SortExpression="AnalysisId" HeaderStyle-Width="25px" >
<HeaderStyle Width="25px"></HeaderStyle>
</asp:BoundField>
Two questions. First, is HeaderStyle-Width a preferred/best way to manage column width in a grid view? And second, how do I suppress the genration of the the additional code?
Tried several different ways to do this but am just not seeing it. Proably a quick solution for someone more skilled than me.
I have a gridview generated from a datatable. One of the columns is "client name" whose data is generated from a class.
I added a link button for the column header that fires a sub that should sort the datagrid, but is not.
Here is the code I have so far that creates the gridview which works fine:
Private Sub PopulateCaseListGrid()
'Kill the existing DataSource, in case of a page reload
gvCaseList.DataSource = Nothing
'Create a datatable with whatever column you want to use
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I have a grid and on each row of grid i generate a radiobuttonlist with 2 items dynamically in rowdatabound. On the save button event i want to access the data of the row and save the data in DB with which ever radio button is selected.I tried different things but all in vain. I tried to use hidden field so that whenever any radio button is selected in a row then in javascript i will update the hidden field but user can select multiple rows so this is not a good solution.
Here is my code of dynamic radio button list generation in rowdatabound event.
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