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  • How to page multiple data sets in ASP.NET MVC

    - by REA_ANDREW
    On a single view I will have three sets of paged data. Which means for each model I will have The Objects The Page Index The Page Size My initial thought was for example: public class PagedModel<T> where T:class { public IList<T> Objects { get; set; } public int ModelPageIndex { get; set; } public int ModelPageSize { get; set; } } Then having a model which is to be supplied to the action as for example: public class TypesViewModel { public PagedModel<ObjectA> Types1 { get; set; } public PagedModel<ObjectB> Typed2 { get; set; } public PagedModel<ObjectC> Types3 { get; set; } } So if I then for example have the Index view inherit from the type: System.Web.Mvc.ViewPage<uk.co.andrewrea.forum.Web.Models.TypesViewModel> Now my initial aciton method for the index is simply: public ActionResult Index() { var forDisplayPurposes = new TypesViewModel(); return View(forDisplayPurposes); } If I then want to page, it is here where I am struggling to decide which action to take. Lets say that I select the next page of the Types2 PageModel. What should the action look like for this in order to return the new view showing the second page of the Types2 PageModel I was thinking possibly to duplicate the action but use it with POST [AcceptVerbs(HttpVerbs.Post)] public ActionResult Index(TypesViewModel model) { return View(model); } Is this a good way to approach it. I understand there is always Session, but I was just wondering how such a thing is achieved currently out there. If any best methods have been mutually accepted and things. So simply, one page with multiple paged models. How to persist the data for each using a wrapper model. Which way should you pass in the model and which way should you page the data, i.e. Form Post Lastly, I have seen the routes take this into account i.e. {controller}/{action}/{id}/{pageindex}/{pagesize} but this only accounts for one model and I do not really wwant to repeat the pagesize and pageindex values for the number of models I have inside the wrapper model. Thanks for your time!! Andrew

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  • Validate input parameters in VB?

    - by EdOxH
    Should I validate input parameters on all functions I create? Input isn't passed from a user, but from other routines as part of an automatic process. I use error handling. I'm not sure what more validating input could do for me. If the input isn't valid, that's pretty much the same thing as an error, isn't it?

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  • ASP.NET Ajax Error: Sys.WebForms.PageRequestManagerParserErrorException

    - by Phil Bennett
    My website has been giving me intermittent errors when trying to perform any Ajax activities. The message I get is Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Error parsing near ' So its obviously some sort of server timeout or the server's just returning back mangled garbage. This generally, unfortunately not always, happens when the site has been idle for a while. Anybody else been able to overcome this? Thanks

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  • referesh datagridview after database update in vb.net

    - by Gbolahan
    Dim myQuery = "UPDATE table1 SET data= CONCAT (data,'" & vbCrLf & "[ " & Date.Now() & " ]" & " " & "[" & getCN() & "]" & " " & txtTelenotes.Text & "[ item1 ]" & "') WHERE id='" & txtID.Text & "'" myCommand.Connection = conn myCommand.CommandText = myQuery myAdapter.SelectCommand = myCommand Dim myData As MySqlDataReader myData = myCommand.ExecuteReader() txtTelenotes.Text = "" dgvREcord.Refresh() tried refreshing the datagridview using dgvREcord.Refresh() but it does not load the changes form the database. Any help Pls.. Thanks.

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  • Getting value from a texbox in asp.net

    - by user279521
    Hi, I have a web page which contains multiple panels (used to show and hide various textboxes) and one particular panel contains textboxes that is used to edit records. However, when I am attemtping to update the table, the txtVendorID.Text.Trim() is blank. SqlConnection con = new SqlConnection(strConn); string sqlUpdateVendor = "usp_Vendor_Update"; SqlCommand cmdUpdateVendor = new SqlCommand(sqlUpdateVendor, con); cmdUpdateVendor.CommandType = CommandType.StoredProcedure; cmdUpdateVendor.Parameters.Add(new SqlParameter("@RecID", SqlDbType.VarChar, 50)); cmdUpdateVendor.Parameters["@RecID"].Value = Request.QueryString["Rec_ID"]; cmdUpdateVendor.Parameters.Add(new SqlParameter("@empid", SqlDbType.VarChar, 11)); cmdUpdateVendor.Parameters["@empid"].Value = txtEmpIDNumber.Text.Trim(); cmdUpdateVendor.Parameters.Add(new SqlParameter("@VendorName", SqlDbType.VarChar, 100)); cmdUpdateVendor.Parameters["@VendorName"].Value = txtVendorName.Text.Trim(); Any idea why the textbox does not contain a value?

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  • Generic Class Vb.net

    - by KoolKabin
    hi guys, I am stuck with a problem about generic classes. I am confused how I call the constructor with parameters. My interface: Public Interface IDBObject Sub [Get](ByRef DataRow As DataRow) Property UIN() As Integer End Interface My Child Class: Public Class User Implements IDBObject Public Sub [Get](ByRef DataRow As System.Data.DataRow) Implements IDBObject.Get End Sub Public Property UIN() As Integer Implements IDBObject.UIN Get End Get Set(ByVal value As Integer) End Set End Property End Class My Next Class: Public Class Users Inherits DBLayer(Of User) #Region " Standard Methods " #End Region End Class My DBObject Class: Public Class DBLayer(Of DBObject As {New, IDBObject}) Public Shared Function GetData() As List(Of DBObject) Dim QueryString As String = "SELECT * ***;" Dim Dataset As DataSet = New DataSet() Dim DataList As List(Of DBObject) = New List(Of DBObject) Try Dataset = Query(QueryString) For Each DataRow As DataRow In Dataset.Tables(0).Rows **DataList.Add(New DBObject(DataRow))** Next Catch ex As Exception DataList = Nothing End Try Return DataList End Function End Class I get error in the starred area of the DBLayer Object. What might be the possible reason? what can I do to fix it? I even want to add New(byval someval as datatype) in IDBObject interface for overloading construction. but it also gives an error? how can i do it? Adding Sub New(ByVal DataRow As DataRow) in IDBObject producess following error 'Sub New' cannot be declared in an interface. Error Produced in DBLayer Object line: DataList.Add(New DBObject(DataRow)) Msg: Arguments cannot be passed to a 'New' used on a type parameter.

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  • Need a VB Script to check if service exist

    - by Shorabh Upadhyay
    I want to write a VBS script which will check if specific service is installed/exist or not locally. If it is not installed/exist, script will display message (any text) and disabled the network interface i.e. NIC. If service exist and running, NO Action. Just exit. If service exist but not running, same action, script will display message (any text) and disabled the network interface i.e. NIC. i have below given code which is displaying a message in case one service is stop but it is not - Checking if service exist or not Disabling the NIC strComputer = "." Set objWMIService = Getobject("winmgmts:"_ & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2") Set colRunningServices = onjWMIService.ExecQuery _ ("select State from Win32_Service where Name = 'dhcp'") For Each objService in colRunningServices If objService.State <> "Running" Then errReturn = msgbox ("Stopped") End If Next Please help. Thanks in advance.

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  • ASP .NET - What's going on behind an Eval() ?

    - by Amokrane
    Hi, I'm trying to understand how Eval() works for a specific purpose. I'm working on a project I don't really know and I need to read some data and put them in drop down list. These data are already read and are displayed inside an ItemTemplate. I noticed there are read using the Eval() method. Something like: <ItemTemplate> <a href="...=<%# Eval("foo") %>></a> </ItemTemplate> I need to know where Eval is getting these data from in order to discover where I should read them for my drop down list! But I didn't really understand how it works! I know that Eval() evaluates data binding expressions at runtime but where do you think I should take a look at? Thank you

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  • VB.Net Split A Group Of Text

    - by Ben
    I am looking to split up multiple lines of text to single them out, for example: Url/Host:ftp://server.com/1 Login:Admin1 Password:Password1 Url/Host:ftp://server.com/2 Login:Admin2 Password:Password2 Url/Host:ftp://server.com/3 Login:Admin3 Password:Password3 How can I split each section into a different textbox, so that section one would be put into TextBox1.Text on its own: Url/Host:ftp://server.com/1 Login:Admin1 Password:Password1 Thanks in advance :)!

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  • Unit testing a controller in ASP.NET MVC 3

    - by Abdullah Al- Mansur
    public Double Invert(Double? id) { return (Double)(id / id); } I have done this for this test but fails please can anyone help with this cos just started with unit testing /* HINT: Remember that you are passing Invert an *integer* so * the value of 1 / input is calculated using integer arithmetic. * */ //Arrange var controller = new UrlParameterController(); int input = 7; Double expected = 0.143d; Double marginOfError = 0.001d; //Act var result = controller.Invert(input); //Assert Assert.AreEqual(expected, result, marginOfError); /* NOTE This time we use a different Assert.AreEqual() method, which * checks whether or not two Double values are within a specified * distance of one another. This is a good way to deal with rounding * errors from floating point arithmetic. Without the marginOfError * parameter the assertion fails. * */

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  • visual studio 2008 (VB)

    - by Ousman
    hello guys, Am writing a programming with visual basic 2008 and i want the programme to be able to read and loop through a text file line by line and showing the event of the loop on a textbox or label until a button is press and the loop will stop on any number that happend to be at the loop event and when a button is press again the loop will continue from where it starts. this is my codes below and having problem with it and any help will be really great. tanks ==========================my codes======================= Imports System.IO '========================================================================================== Public Class Form1 '====================================================================================== 'Dim nFileNum As Integer = FreeFile() ' Get a free file number Dim strFileName As String = "C:\scb.txt" Dim objFilename As FileStream = New FileStream(strFileName, FileMode.Open, FileAccess.Read, FileShare.Read) Dim objFileRead As StreamReader = New StreamReader(objFilename) 'Dim lLineCount As Long 'Dim sNextLine As String '====================================================================================== '======================================================================================== Private Sub btStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btStart.Click Try If objFileRead.ReadLine = Nothing Then MsgBox("No Accounts Available to show!", MsgBoxStyle.Information, MsgBoxStyle.DefaultButton2 = MsgBoxStyle.OkOnly) Return Else Do While (objFileRead.Peek() > -1) Loop lblAccounts.Text = objFileRead.ReadLine() 'objFileRead.Close() 'objFilename.Close() End If Catch ex As Exception MessageBox.Show(ex.Message) Finally 'objFileRead.Close() 'objFilename.Close() End Try End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub End Class

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  • Access property using its name in vb.net

    - by Aleksey
    For example: Sub Test() Dim car as new MyCar car.chassis.wheel.radius = 15 Console.WriteLine(car.chassis.wheel.radius) End Sub So question is. Is it possible to access the property using its string name like Something("car.chassis.wheel.radius") = 15?

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  • vb.net add text to form without interaction

    - by user228058
    I have a winform project which lists all the files in a specified folder. It allows the user to select a new destination for each file, and when the user has chosen the destinations for all files that he would like to be moved, it moves the files, one by one. My next step is, I need to display a confirm form when the files are being moved, and add each file's name and destination to the confirm form as it is being moved. My question is: How can I add more text to the confirm form's controls after I already loaded it (using confirm.showdialog() from my other form, without any user interaction? I imagine that I need to do it from the original form, because it needs to display each one when it starts to move that file, but I'm open to any suggestions:) TIA

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  • VB.NET SqlException Was Unhandled

    - by Daniel
    I am trying some SQL code but I get an error when I try this code. Main.database.ExecuteCommand("UPDATE Contacts SET first_name='" + c.first_name + _ "', middle='" + c.middle + _ "', last_name='" + c.last_name + _ "', age='" + c.age + _ "', mobile_phone='" + c.mobile_phone + _ "', home_phone='" + c.home_phone + _ "', work_phone='" + c.work_phone + _ "', home_street='" + c.home_street + _ "', home_city='" + c.home_city + _ "', home_state='" + c.home_state + _ "', home_zip='" + c.home_zip + _ "', work_street='" + c.work_street + _ "', work_city='" + c.work_city + _ "', work_state='" + c.work_state + _ "', work_zip='" + c.work_zip + _ "', home_www='" + c.home_www + _ "', work_www='" + c.work_www + _ "', home_email='" + c.home_email + _ "', work_email='" + c.work_email + _ "' WHERE first_name='" + c.first_name + _ "' AND last_name='" + c.last_name + "'") I get the following error Sql Exception was unhandled The data types text and varchar are incompatible in the equal to operator.

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  • Problem When Compressing File using vb.net

    - by Amr Elnashar
    I have File Like "Sample.bak" and when I compress it to be "Sample.zip" I lose the file extension inside the zip file I meann when I open the compressed file I find "Sample" without any extension. I use this code : Dim name As String = Path.GetFileName(filePath).Replace(".Bak", "") Dim source() As Byte = System.IO.File.ReadAllBytes(filePath) Dim compressed() As Byte = ConvertToByteArray(source) System.IO.File.WriteAllBytes(destination & name & ".Bak" & ".zip", compressed) Or using this code : Public Sub cmdCompressFile(ByVal FileName As String) 'Stream object that reads file contents Dim streamObj As Stream = New StreamReader(FileName).BaseStream 'Allocate space in buffer according to the length of the file read Dim buffer(streamObj.Length) As Byte 'Fill buffer streamObj.Read(buffer, 0, buffer.Length) streamObj.Close() 'File Stream object used to change the extension of a file Dim compFile As System.IO.FileStream = File.Create(Path.ChangeExtension(FileName, "zip")) 'GZip object that compress the file Dim zipStreamObj As New GZipStream(compFile, CompressionMode.Compress) 'Write to the Stream object from the buffer zipStreamObj.Write(buffer, 0, buffer.Length) zipStreamObj.Close() End Sub please I need to compress the file without loosing file extension inside compressed file. thanks,

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  • ASP.net web page still displaying cached versions

    - by user279521
    My web page is still displaying a previously cached versions of the page. I have this in the page_load event: Response.Clear(); Response.Buffer = true; Response.ExpiresAbsolute = DateTime.Now.AddDays(-1d); Response.Expires = -1; Response.CacheControl = "no-cache"; Response.Cache.SetCacheability(HttpCacheability.NoCache); I have this in the Page_Init: protected void Page_Init(object Sender, EventArgs e) { Response.Cache.SetCacheability(HttpCacheability.NoCache); Response.Cache.SetExpires(DateTime.Now.AddDays(-1)); } Any idea what I might be missing?

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  • .Net in HTML tp return true if reader object not null, otherwise return false

    - by Phill Healey
    I'm using a DataList to show some data from the database and populating the fields on the html side. I now have a requirement to change the visibility of a panel based on whether or not a db field has data or not. I need to be able to show the panel if the relevant data field has content, and hide it if it doesn't. Eg: <asp:Panel ID="pnlNew" runat="server" Style="margin:0; padding:0; width:42px; height:18px; bottom:5px; right:10px; float:right; position:relative; background:url(../_imgVideoBadge.png) no-repeat;" Visible='<%# Eval("cheese") != null %>' ToolTip="available"></asp:Panel> Obviously this doesn't work in terms of the visible property. But hopefully it gives an idea of what I'm trying to achieve. Any help would be greatly appreciated. I've seen examples previously of doing something along the lines of: a ?? b:c How could this be applied to the above requirement?? Thanks in advance.

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