Asp.net - Why Won't The Anonymous Function Fire On Grid.prerender
Apr 23, 2010
In my gridview I have fields for inserting a new record in the footer.In my objectdatasource selecting event if no records came back I bind a single mock row to force the footer to show so they can still add records. Since the row does not contain real data I hide the row.
...
If result.ItemCount = 0 Then
result = mockRow
AddHandler mygridview.PreRender, AddressOf HideRow
[code]....
This works fine. However, I'd like to condense it like this:
...
If result.ItemCount = 0 Then
result = mockRow
AddHandler mygridview.PreRender, Function() mygridview.Rows(0).Visible = False
[code]....
This compiles fine, but the row doesn't get hidden. why my anonymous function isn't getting hit?
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Jan 2, 2012
I recently decided to change from using Windows Authentication for my internal web applications to Forms Authentication. I've not used the latter very much and one site explained you have to enable both Forms and Anonymous for this to work. The idea is to verify user passwords against an active directory then grant them access accordingly. I had this working just fine locally and when publishing to IIS 7.5 it still worked. It was just a basic Visual Studio project that would redirect to our homepage.
The problems arose when I tried accessing this same project securely with https, I included the full domain and it would load the new login page but when I clicked login it would do nothing. Since then I've scoured the web and found numerous mentions of this and that and tried many of them to no avail.
It was only later I created a blank project with a single button and one line of the code on the page to see if a post back had fired. After publishing I only enabled Anonymous Authentication in IIS and browsing to this basic test app using http when you clicked the button, false on the page changed to true - indicating a post back. Yet with https it just remains false. I think this may be why the active directory login wasn't working as it too had Anonymous enabled.
I'm still pretty new at the secure side of things but with the details passing over I have to use a secure connection just for the login then it can redirect to the usual applications we use internally.
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Mar 3, 2011
Just so it's known, this question is mostly academic, even though I tried to use the concept in a real-world solution. I realize the example is contrived, but I believe the concept is valid.I want to write some fluent code like this:
[code]...
I realize that I can't force an anonymous type into a specific type (like implementing an interface or some other class), and I don't want the overhead of defining a specific class just to match my desired fluent name with the actual method name. So I was able to make the code work like this:
copy(my_first_file).to.Invoke(my_second_file)So there is no IntelliSense or type awareness there, and I have to include the Invoke in order to have the method run. How can I get more type safety and exclude the Invoke method, under these constraints: Anonymous Type returned from Method No additional classes or interfaces Preferably, I do not want to pass in another parameter to the copy() method that tells what type to return, unless copy becomes a generic method (but I think that means defining another class/interface, which I don't want to do)
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Jul 13, 2011
I'm trying to create an extension method that returns an IEqualityComparer based on a lambda function. Heres the extension method:
<Extension()>
Public Function Comparer(Of T)(Func As Func(Of T, T, Boolean)) As IEqualityComparer(Of T)
Return New GenericComparer(Of T)(Func)
End Function
[Code]...
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Apr 16, 2012
I am trying to create a new thread using an anonymous function but I keep getting errors. Here is my code:
New Thread(Function()
// Do something here
End Function).Start
Here are the errors I get:
New - Syntax Error
End Function - 'End Function' must be preceded by a matching 'Function'.
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Apr 29, 2011
I have this code:
Public Sub Submit(
ByVal reasonId As Integer,
ByVal email As String,
ByVal message As String
)
'[Argument validation code here]
EmailController.sendMail(reasonId, email, message)
End Sub
I want to spin this off in a new thread so Submit() returns right after creating and start the thread.In C#, I could do something like this:new Thread(() => { EmailController.sendMail(reasonId, email, message)}).Start();
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Aug 1, 2011
After reading this post i realized that i cannot pass an anonymous type as a parameter to a function. So what other options do i have?
Perhaps, passing a Query.ToList as parameter would help, or am i re-inventing the wheel?
Update: I have the following query, which i would like to pass to a function:
Sub Test
Dim Query = (From c In DB Select New With { .ElementName = c.Name })
DoSomething(Query)
[Code].....
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Nov 16, 2011
i have follwing textbox,
<dx:ASPxTextBox runat="server" ID="txtCustomer" Native="true" CssClass="medium required">
<ValidationSettings RequiredField-IsRequired="true" ></ValidationSettings>
</dx:ASPxTextBox>
when User doesn't enter anything into textbox, inbuilt Required field validation fires. and displays * indicating it is required field but i want to change some css style to AboveTextbox when RequiredField event is fired. i mean i want to perform some task when Inbuilt requiredfield Validation fires. how can i catch or how can i know when Requiredfield validation fires?
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May 30, 2008
I have created in a function, in, lets say, formA :
Private Sub search_name(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dv.RowFilter = "Real_Name LIKE '%" + Form1.txtRealname.Text + "%'"
If dv.Count = 0 Then
MessageBox.Show("Nothing Found", "Error")
Me.Close()
Else
[Code]...
Public Sub search_name(ByVal sender As System.Object, ByVal e As System.EventArgs)this makes it so that the sub is accessable by all classes, rather than Just it's own.
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Nov 5, 2009
I want to be able have the class autofire a function when it is first declared. In my example it would be to load from a file all the constant variables for use in the program.
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Nov 6, 2011
I would like to get the index of the current row at the PreRender event.
Protected Sub GridView1_PreRender(sender As Object, e As System.EventArgs) Handles GridView1.PreRender
Dim idx as integer =...
End Sub
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Jul 9, 2009
I'm a Linq noobie, maybe someone can point me in the right direction. What's wrong here? These anonymous types seem to have the same signatures.
[Code]...
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Jul 28, 2009
i have a question in vb about inside a data grid view i need to create a combo box...
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Jun 2, 2010
winforms .net 3.5 Ultrawingrid 9.2 In my subclass of Ultrawingrid.Ultragrid :
[Code]...
This works fine. But when the grid is dropped on a TabControl tabpage, the ctrl-tab looks very different to the sub above. e.keycode is seen as controlkey {17} I realize that by default cntrl-Tab moves between tabpages. I need to override this behavior. My thought is I probably need a subclass of the tabControl which will pass the keycombo through just as the form does but I confess to being clueless as to how to accomplish that. I tried to override the onkeydown of a tabcontrol subclass and just issuing a return and not and base call to onkeydown if the ctrl-tab combo was pressed but it seemed to see the e.keycode as controlkey as well.
[Code]...
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Jan 26, 2011
i'm using the MVCContrib grid trying to override the start of a row and the end of a row. It's not working as advertised. This is an extract from my MVC2.0 view.
<div id="chargestable">
<br />
<% With Html.Grid(Model.InvoiceListingInformation)
.Columns(Function(column)
[code]....
The stuff i put in the begin row and end row functions is being rendered above the grid entirely.(PS i can't just use the attributes as i need to wrap the row in another html element)
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Mar 11, 2010
i have a prob that i have a gridview on the parent window. when i open a child window using showmodaldialog, i enter some data in the textboxes. now when i close my child window i want to display the text entered by me in the grid. i want to know how can i access the grid in child window
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Jun 9, 2012
Trying to understand the basics of grid design so how would I make a over sized grid or a grid larger then whats viewable on my screen resolution? Below is a simple chart describeing what i want to make roughly. I would like to build the grid in "blocks".[URL]..
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Apr 15, 2012
The below code was written to bind the datatable to the grid, but i am unable to fill the grid.I am unable to fill the datagrid. [code]
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Mar 2, 2010
I have UltraGrid and i need when i click on grid row to get content from specific column of that grid. For example if I click in cell of fourth column then i need to get value of first column of the same row where i clicked.
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Jan 14, 2010
This is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005.We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below:We've tried looking through all of the properties of the DataGridView control, and found some interesting things that looked promising such as the DataGridViewAdvancedHeaderStyle, and DataGridViewHeaderBorderStyle, but none of it seems to allow you to change the colors on it.Does anyone know how to do this without remaking the entire thing with a GDI+ control?
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Sep 24, 2011
I am sure i am doing something terribly wrong, but i should better ask the experts.
At the third line i get the error Value of type <anonymous type> cannot be converted to <anonymous type>
Dim Query = (From c In Db.web Select New With {.AA = c.AA}).ToList
Dim v = New With {.Amount = 108}
Query.Add(v)
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Dec 26, 2008
need to have a summation field in each row of a grid in visual basic. Each row needs to calculate the remaining quantity of its row and all other rows beneath it. Thus the subtotal field in the 1st row would equal the sum of the shown quantity field for the entire grid.The next row would include its value and all those beneath it. Its subtotal value would be less than the subtotal of the row above it (by the quantity value of the 1st row). My code for the grid is very simple I just can't figure out how to add this iteration.
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Dec 28, 2009
I have an Idea but im not sure how to get started... Its a map maker... There will be a panel on the side for items and it will draw a grid and you can make a map using the items on the grid.
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May 31, 2009
As I understood , The property grid is given an object which it can manipulate by extracting its Properties using reflections.
My problem is that I have a set of Parameters that is determined during run-time , thus I can't staticly compose a class with properties to represent this set.
I have two idea in mind to solve this problem but both are complex and will probably consume lot of time , infact i will say they are not practical under my time constraints. One is to use Reflection Emit in order to define a class dynamically and the other is to dynamiclly build a C# source file and then compile it using CodeDom.
Can Property grid behave in a different manner( other then extracting the Properties of an object using reflections ) that can suite my problem?
I want to say that the reason I went to the property grid from the begining was its ability to provide realy nice Data Retrieval UI for common types.For color you autometically get a palette , For dataTime you automatically have a nice calender. I would like to get those things automatically If possible.
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Jan 18, 2011
Visual Basic 2005 I have a DataGridView on a form. It's bound to a DataSet, and I'm working by way through the dataset doing various things to the records based on the "status". What I would like to do is scroll the grid, so that the row that the program is 'looking at' is in the middle of the grid.
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Oct 13, 2011
I have the below code that i am trying to have two datagrids with a grid splityter in the middle. The split seems to be working fine but the issue i am having is when I populate the datagrid it is growing in height and changing the splitter instead of leaving the height alone and adding scroll bars.
What simple thing am I overlooking?
<Grid x:Name="gdHistory" Grid.Column="0" Grid.Row="2" >
<Grid.RowDefinitions>
[code].....
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Mar 13, 2011
The following syntax is valid VB.NET code
Dim myCollection As New List(Of Stock)
myCollection.Add(New Stock(Guid.NewGuid, "Item1"))
myCollection.Add(New Stock(Guid.NewGuid, "Item2"))
[code]....
How can I accomplish the same thing in C#? I have tried...
myCollection.FindAll(bool delegate(Stock stock) {
if (blah blah) {
}
});
But it appears I have somehow structured it incorrectly as I get the following error. "Error 1 Invalid expression term 'bool'"
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Jun 28, 2010
I have below code in C#:
[Code]...
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Jun 12, 2011
I have a few problems with making a map editor, how to make one reply and ill give you my msn well actually this problem: its not making the grid invisible if you de-deselect the option "Grid On" because the rect's have already been drawn. So I need to know how you can delete them.
[Code]...
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Feb 13, 2009
I have a FlexGrid control in my Windows application that contains a row of data. The data in this row is related to even more data that won't all fit on the same row. For Example:The main data row contains Username, Last Name, First Name, Middle Name, E-mail Address, Phone Number, etcA secondary row to this might contain user permissions to certain resources, such as File Server Access, FTP Access, Remote Access, etc.Now, I can use the subtotal and outline capabilities of the VSFlexGrid to make a second row, but the column widths are still bound by those set for the main data row. Additionally, I can't put real "headers" on the supplemental data. I have to fake it by creating an additional row, setting the background color of that row to gray, putting the header strings into those fields, and then adding the next row with the actual details.
What I would like to do is create separate grids for these secondary rows and "embed" them in a blank row of the existing FlexGrid control directly under the related main data row. This would give me the ability to use a different number of columns, to format these columns independently of the "parent" FlexGrid settings, as well as put a new header row for the new grid that identifies its data.In other words, I'd like to somehow make a "child" grid that's related to a particular row of the "parent" grid (not the entire grid itself). I don't know if this is possible, and if there is another way for me to accomplish this goal, I'm all ears. However, if it IS possible, I'd love some advice on how to implement it.
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