Forms Data Controls :: Retrieve An Item In Its Original Type?
May 22, 2010
I've been looking all afternoon, but the best I've been able to do when the user selects a row is to get at the item with each field in Text format.I would like, ideally, to be able to get at the row in its original MyDataType that I bound. I'm using an ObjectDataSource, and the grid (a RadGrid in this case, but its much the same deal as gridview) know the type not only of the rows by also of each and every column.I'm stymied that I'm stuck in the days of error-prone referencing columns by their name. Instead of:
grid.Items[grid.selectedIndexes[0]].item["myColumnName"]
I'd much rather be doing something like
grid.Items[grid.selectedIndexes[0]].item.myColumn
But for the life of me I can't figure out if its even possible. The grid is retaining viewstate, so it still has all of the data.
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Apr 2, 2010
I am having problem with rowdatabound, want to add if conditions intact, i am using teh following two if conditions and they don't look right. i found them on google.
If e.Row.RowState = DataControlRowState.Normal Or e.Row.RowState = DataControlRowState.Alternate Then end if
If e.Row.RowState = DataControlRowState.Edit Or e.Row.RowState = 5 Then end if
With datagrids i use these and they work excellent:
If e.Item.ItemType = System.Web.UI.WebControls.ListItemType.Item OrElse e.Item.ItemType = System.Web.UI.WebControls.ListItemType.AlternatingItem Then
end if.....
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Apr 8, 2010
In a gridview i have a TemplateField containing a radioButtonList. I have around 100 rows with data and each radiobuttonlist has around 5 options. I would like to have the user to select an option from the radiobuttonList and then in my button click event to record the selected value of the radiobuttonlist for each row. The area im struggling with is how could the click event of my button send the selected value for each row?
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Feb 4, 2011
I am Working on a ASP.net project(VB.net), i have a gridview to display names of "Patients". Each patient has a unique "labID",
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Jul 9, 2010
I'm binding my object data source to a method that returns a list of ints (List<int>).
The object data source is being used by a DataList.
<asp:ObjectDataSource ID="objectDataSourceYears" runat="server" EnableCaching="true" CacheDuration="Infinite"
SelectMethod="GetYearsUnderArticles"
TypeName="Project.DAL.Services.UmbracoService"></asp:ObjectDataSource>
My question is:
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Jan 3, 2010
I have a row in datagrid with a ID field and some other fields
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May 28, 2010
I have a gridview that I have bound to a sqldatasource. However I have the gridview changing data shown per a drop down list and textbox so I can choose how I am searching.
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My issue is that if I implement the edit button and click edit the grid view seems to resort back to the original select command that was entered when I created the datasource.
Is there any way to get the gridview to do what I want it to?
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Feb 17, 2011
I have EntityDataSource for DetailsView which is in Edit mode by default (showin Update, Cancel link buttons).
This datasource also has foreign key called PecID. If I change the value in textbox bound to PecID, it works fine.
Entering IDs is not very user friendly, so I add dropdownlist and new datasource.
When I select new value from dropDownList and press update the DropDownList's selection is restored to original (previous) value.
Other values in textboxes are saved as expected.
After few hours of trying to figure out what is going on, I got lucky. I figure out that it is important the order of TextBox and DropDownList in field template.
This is the working order (textbox before DropDownList)
[Code]....
This one doesn't work [Code]....
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Oct 27, 2010
I use a ItemDataBound for a repeater.But i use 2 kinds of linq querys to bind it.Some of them has a MerkID, and some doesnt have this item.So its easy i need to do this:
if(e.Item.DataItem.Contains("MerkID"))
{
//Code for linq query 1
} [code]...
So of course the if selection doesnt work, but how can i do that? I already tryed this:
DataRowView drv = (DataRowView)e.Item.DataItem; if (drv.Row.Table.Columns.Contains("MerkID"))
But that doenst work because he cant convert it to a datarowview because its a linq class.So what to do? Right now i use a try and catch, but there are better solutions i guess...
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Oct 6, 2010
I have a repeater control:
<asp:Repeater ID="rep" DataSourceID="XMLDSCompare" runat="server">
<ItemTemplate>
<h4><%# XPath("title")%></h4>
</ItemTemplate>
</asp:Repeater>
Now if its the first item in the total resultset, I want to add <div> to ItemTemplate control, if its the 2nd item, I want to add </div>
So output would be (not including table tags generated by repeater control):
<div>
title 1
title 2
</div>
<div>
title 3
title 4
</div>
<div>
title 5
title 6
</div>
How would I do this in the ItemDataBound event of repeater control?
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Nov 7, 2010
[Code]....
here the method OnItemDataBound , look at how it work
[Code]....
problem is the e.Item always get one and only one last item . turn out my listview display many rows but with a consistent content of the last user (in the database record) . How can i resolve this ?? any creative method are accepted , i'm just want to finish this project
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Aug 9, 2010
I have a listview set up in "flow" mode where the existing records are all on an extended page so you can scroll down to any record.
The InsertItem Template is in the first position, making it easy to insert a new record.
And one can scroll down the page to any record, click the edit button and update that record -- nice having everything on one scrollable page.
I am running into a problem with validations. I have validation controls restricting inputs for all the textboxes on the Insert Item template. They work fine. And on Item Inserted I am running a page validation:
Page.Validate()
If Not Page.IsValid Then
e.Cancel = True
End If
which works fine also.
The problem occurs when I scroll down to an existing record, and go to edit it. I have all the same validation constraints on the textboxes for the EditItemTemplate as I have on the InsertItemTemplate. But I cannot successfully do a page validation on updating the record. The code I am using on update is:
Protected Sub LVRentals_ItemUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ListViewUpdateEventArgs) Handles LVRentals.ItemUpdating
Page.Validate()
If Not Page.IsValid Then
e.Cancel = True
End If
End Sub
This results in a Cancel even if there are no validation errors on the InsertItemTemplate because the Page.Validate() seems to be causing the InsertItemTemplate to think its fields should be filled out also.
Here is the code for a typical entry of the InsertItem Template:
[code]....
All the controls in the Edit Item template are part of ValidationGroup "edit1" and those of the InsertItem Template are part of ValidationGroup "edit2"
How can I get around receiving validation errors on the InsertItem Template when I am trying to validate just the EditItemTemplate when both are present on the page?
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Sep 6, 2010
I have a FormView that allows a user to register for a company event. I want to do a couple of things with this form.
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[Code]....
[Code]....
The Second page confirms the users information by taking those session variables and placing them into labels:
[Code]....
[Code]....
However, after I place information into the formview on the first page, it throws up this error:
"Conversion from type 'TextBox' to type 'String' is not valid".
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I have a gridview which I'm trying to get the display of phonenumbers listed in a certain display format; (xxx) xxx-xxxx.If I have the code such as this, it displays the unformatted phone number and (000) 000-0000 for the null items.
[Code]....
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Oct 23, 2010
i 'm working on AIRLINE RESERVATION PORTAL and it's ok how to do this ?
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3 Child application form
1 Infant application form
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I'm trying to pass email addresses from an array to a stored procedure, then display the results in my gridview. I get the following error:No mapping exists from object type System.String[] to a known managed provider native type.On this line: Dim DR As SqlDataReader = MyCommand.ExecuteReader
[Code]....
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I'v been looking for ages on how to get the current selected menu item into a label. so for example on the menu you have home and about, if i click on about it will but the text "About" in the labels text whats in the body of the form. You could say its a sub heading and i would like to do this in c# ;) somthing like this:
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I am using a Checkboxlist and want to retrieve the values of each item that is checked.
[Code]....
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Jun 3, 2010
Updates 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]....
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Mar 22, 2011
I am using list view to display the the data but i am getting an error like An item placeholder must be specified on ListView 'ListView1'. Specify an item placeholder by setting a control's ID property to "itemPlaceholder". The item placeholder control must also specify runat="server.Even i have specified the itemplaceholder id but no use still same error.
[Code]....
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I can see the issue here but can't get my head around a dv and dv.Table unless I'm looking too deep into this.Essentially, I can't get AsEnumerable.Sum() on dv but on dv.Table but I need it on the filtered view (ie. dv).This is the framework the entire application is built on so I can't pass these parameters to the stored procedure! Well I could but cannot be bothered re-writing and testing eveyrthing!
[Code]....
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Sep 25, 2010
i am trying to retrieve data from sql database but I get this error: < An expression of non-boolean type specified in a context where a condition is expected, near ')'. > whats this error meaning?
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Jan 5, 2010
Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.TextBox'.
[code]....
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Oct 1, 2010
Basically, what I did is that: I have a table in SQL database and some of data fields allow null. I built Objectdatasource through dataset. When I built update page using dataset. It generate the following error before showing the update page correctly. It seems I have issue to retrieve the null value from the database through using objectdatasource through dataset. Any suggestions?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
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Sep 30, 2010
I am trying to upload a picture into database using FormView insertItemTemplate. FormView is bounded by objectdatasource.To upload, I placed FileUpload control inside insertItemTemplate.In table the dataType is image.Error:Object of type 'System.Boolean' cannot be converted to type 'System.Byte[]'.
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