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  • ASP.NET MVC model state as text

    - by David Moorhouse
    Is there an easy way to get a summary string of the errors that have been added to a controller's modelstate? I'm looking to return this in an Ajax method and want the validation errors etc to be returned to the client (i.e. the view does not exist for this method call). Or do I have to loop through the modelstate and look at each object and extract the error text manually?

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  • Problem with ajax request in Asp.Net MVC 2

    - by Fraz Sundal
    I have implemented ajax on paging but my problem is when i navigate on paging and go to page 1 then on page 2 after that if i press backspace it went to the last page from where it comes instead of going to page 1. I want to know how should i implement paging like stackoverflow have. Further i have noticed that my url doesnt change on paging it remains like Home/Index when im on 1st page or 2nd page or any other page?

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  • postback __EVENTTARGET ID in Page.Request.Form has $ not _ in ASP.NET

    - by Industry86
    I am using the ToolkitScriptManager from the Ajax tool kit and I am having a problem finding my button's ID. My ID's on my controls come back with $ symbols instead of _ symbols, like the following: Grid$ctl06$insertButton This obviously causes problems when attempting to find the control from the Page.Request.Form keys. I cannot seem to find the determining factor that would cause this. Now, I know this is the name and in my source I see that the ID is with the _, so why is the Page.Request.Form showing up with the $ symbol instead? Anybody encounter this before?

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  • How to serialize this Xml in .NET (array)

    - by Morri
    I need Xml that looks like this <foo> <bar ... /> <bar ... /> </foo> And currently have the following class structure : [XmlRoot("foo")] public class Foo { [XmlArrayItem("bar")] public List<Bar> myBars; } But this gives me Xml where bar items are wrapped inside a bars element. How should I define my custom XmlAttributes so I'd get the Xml structure I need?

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  • Image resizing efficiency in C# and .NET 3.5

    - by Matthew Nichols
    I have written a web service to resize user uploaded images and all works correctly from a functional point of view, but it causes CPU usage to spike every time it is used. It is running on Windows Server 2008 64 bit. I have tried compiling to 32 and 64 bit and get about the same results. The heart of the service is this function: private Image CreateReducedImage(Image imgOrig, Size NewSize) { var newBM = new Bitmap(NewSize.Width, NewSize.Height); using (var newGrapics = Graphics.FromImage(newBM)) { newGrapics.CompositingQuality = CompositingQuality.HighSpeed; newGrapics.SmoothingMode = SmoothingMode.HighSpeed; newGrapics.InterpolationMode = InterpolationMode.HighQualityBicubic; newGrapics.DrawImage(imgOrig, new Rectangle(0, 0, NewSize.Width, NewSize.Height)); } return newBM; } I put a profiler on the service and it seemed to indicate the vast majority of the time is spent in the GDI+ library itself and there is not much to be gained in my code. Questions: Am I doing something glaringly inefficient in my code here? It seems to conform to the example I have seen. Are there gains to be had in using libraries other than GDI+? The benchmarks I have seen seem to indicate that GDI+ does well compare to other libraries but I didn't find enough of these to be confident. Are there gains to be had by using "unsafe code" blocks? Please let me know if I have not included enough of the code...I am happy to put as much up as requested but don't want to be obnoxious in the post.

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  • Asp.Net MVC Error Handling & logging

    - by Navish Rampal
    I am trying to Catch exceptions and log it. Presently I have written a Utility method and Passing the Exception to it in the catch block and finally logging the application using MS Enterprise Library 4.0. I want to know is there any other better way to log errors. Show exception message in the same view for some type of exceptions for rest navigate to error page. If someone can help me on this! Navish

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  • Edit and save the word file online on web in .NET

    - by Sharat
    The requirement is as follows 1.) Upload the word file on website 2.) Display word file on website with the same formatting as we upload 3.) Edit and save the word file online on web 4.) Download the changed Wrod file from website (word file Format should not changed) How to achieve this requirement.

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  • VB.NET 2008 Application crashing during Do Loop

    - by RedHaze
    I am writing an application to compare each item on listbox1 to all items on listbox2. If the item is found, then remove it from both lists. The goal is to only have the items that were not found remain on both lists. The problem is, the application just hangs and I never get any results. I looked at my code several times and I cannot figure out what's going on (programming noob I know...). Can anybody help me with this? Code Snippet: Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Dim a As String Dim b As String Dim y As String For i As Integer = 0 To ListBox1.Items.Count - 1 a = ListBox1.Items(i) y = 1 Do While y = 1 For x As Integer = 0 To ListBox2.Items.Count - 1 b = ListBox2.Items(x) Dim res As Int16 = String.Compare(a, b) If res = 0 Then y = 0 ListBox2.Items.Remove(i) ListBox2.Items.Remove(x) ElseIf x = ListBox1.Items.Count Then Exit Do End If Next Loop Next End Sub

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  • Internal classes with ADO.NET Entity Framework

    - by Regent
    I'm using Entity Framework for creation of my Data Access Layer and I want for all of my classes to be internal. I know it is possible to manually assign it manually in the designer for each class. But looks like it also requires to set internal modifier for each single property in every class! I have about 30+ entities and it will be a huge work to do. Do you know any ideas how to set a 'default access' for the entire model?

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  • list box asp.net selected problem

    - by lodun
    .When i choose item from "kategorije" new items loads to me in SUB_kategorije, but when i choose item from SUB_kategorije and when i click on button it shows me this error: Object reference not set to an instance of an object. Line 101: kom.Parameters.Add("@podkategorija", SqlDbType.Text).Value = SUB_kategorije.SelectedItem.ToString(); This is my source... dod_pit.ascx dod_pit.ascx.cs

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  • Cache in asp.net

    - by newperson
    Cache.Insert("lstDownload", GetListDownload(), null, DateTime.Now.AddDays(1), TimeSpan.Zero); when will cache be exprired? what will we receive when cache expired? http://stackoverflow.com/questions

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  • .Net using Chr() to parse text

    - by Marcx
    I'm building a simple client-server chat system. The clients send data to the server and the server resends the data to all the other clients. I'm using the TcpListener and Network stream classes to send the data between the client and the server. The fields I need to send are, for example: name, text, timestamp, etc. I separate them using the ASCII character 29. I'm also using ASCII character 30 to mark the end of the streamed data. The data is encoded with UTF8.. Is this a good approach? Will I run into problems? Are there better methods? UPDATE: Probably my question was misunderstood, so I explain it better.. Suppose to have a list of data to send from client to server, and suppose to send all the data in only one stream, how do you send these data? Using a markup Using a character as a delimiter Using a fixed length for every fields

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  • [NET] Reflection

    - by pipiscrew
    using : Dim a As [Assembly] = [Assembly].LoadFile("C:\test.exe") Dim testTP As Type testTP = a.GetType("SplashScreen", True, True) obj1 = Activator.CreateInstance(withoutFOR) obj1.show() my prog made reflection to test.exe SplashScreen loaded , also obj1 filled when SplashScreen disposed - MainForm loaded the obj1 isnothing! when try to access obj1 VS say : AccessibilityObject = {"Cannot access a disposed object. Object name: 'SplashScreen'."} I want always obj1 filled from the active form!! how????

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  • .NET dynamic listbox

    - by Mike
    What I wanted to do was create a listbox from a delimited text file. The listbox would populate X # of rows based on the rows of the text file. And the listbox would have 3 columns, each being populated from a specific delimiter. Is this possible in C#? Any starting point would be great!

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  • Too many local variables in ASP.NET

    - by Yongwei Xing
    Hi all I wrote a control, and use a tool to do the code analysis. There is a test that I didn't pass. Avoid excessive locals, http://msdn.microsoft.com/library/ms182263(VS.90).aspx. In my CreateChildControls function, I built a big table with lots of field. I need to create a lot of TableRow and TableCell to construct the table. But these are not field or property of control. Thery are local variables in the function, which are created dynamically. Should I make these TableCells and TableRows as fields of the control? Or I just keep them as the local variables in the CreateChildControl function? Best Regards,

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  • VB.Net Memory Issue

    - by Skulmuk
    We have an application that has some interesting memory usage issues. When it first opens, the program uses aroun 50-60MB of memory. This stays consistent on 32-bit machines. On 64-bit machines, however, re-activating the form in any way (clicking, dragging, alt-tabbing, etc.) adds around another 50MB to it's memory usage. It repeats this process several times before resetting back to around 45MB, at which point the cycle begins again. I've done some research and a lot of people have said that VB in general has pretty poor garbage collection, which could be affecting the software in some way. However, I've yet to find a solution. There are no events fired when the application is activated (as shown by 32-bit usage) - the applications is merely sitting awaiting the user's actions. At load, the system pulls some data into a tree view, but that's the only external connection, and it only re-fires the routine when the user makes a change to something and saves the change. Has anyone else experienced anything this strange, and if so, does anyone know of what might fix it? It seems strange that it only occurs under x64 systems. Thanks

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  • ASP.NET Radio Button State and Back Key

    - by Dave S
    When using the browser back key on a page with radio buttons and using auto-postback, the state of the buttons (checked) stays the same while other parts of the page do not. This results in a situation where button two is checked and the cached page (because of server-side logic) displays a message that button 1 is checked. What is the best way to handle this situation? The following code example exhibits this behavior: [Form:] <asp:RadioButton ID="rb1" runat="server" AutoPostBack="true" Text="Button1" OnCheckedChanged="rb_CheckedChanged" GroupName="rbgroup" Checked="true" /> <br /> <asp:RadioButton ID="rb2" runat="server" AutoPostBack="true" Text="Button2" OnCheckedChanged="rb_CheckedChanged" GroupName="rbgroup" /> <br /> <hr /> <asp:Label ID="lbl1" runat="server">Button 1</asp:Label> [Code Behind:] protected void rb_CheckedChanged(object sender, EventArgs e) { if (rb1.Checked == true) lbl1.Text = "Button 1"; else lbl1.Text = "Button 2"; }

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