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  • how to control textbox type to double in visual basic?

    - by fema
    Hi, I'd like to make a textbox that accepts only numbers, but not integer, but rather double. I've read here about e.Handled = Not Char.IsDigit(e.KeyChar) and it works, but again, it can be used only for integer, since it declines decimal point. Another thing I've read here is If Not Double.TryParse(TextBox2.Text, value) Then .... and it would work fine, except that it allows only decimal comma instead of point. I don't know whether it's because of my location settings (Hungary, we use commas instead of points), but I don't have any other idea how to solve my problem, and the SQL server I send my data uses decimal point. Thanks in advance.

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  • Load ascx via jQuery

    - by Raika
    Is there a way to load ascx file by jQuery? UPDATE: thanks to @Emmett and @Yads.i am use the handler and the ajax: jQuery.ajax({ type: "POST", //GET url: "Foo.ashx", data: '{}', contentType: "application/json; charset=utf-8", dataType: "json", success: function (response) { jQuery('#controlload').append(response.d); // or response }, error: function () { jQuery('#controlload').append('error'); } }); but i,m just getting an error. my ajax is wrong? Another Update : i am using error: function (xhr, ajaxOptions, thrownError) { jQuery('#controlload').append(thrownError); } and this what i get : Invalid JSON: Test =(this test is label inside my ascx) and my ascx file after Error!!! Another Update : my ascx file is somthing like this: <asp:DropDownList ID="ddl" runat="server" AutoPostBack="true"> <asp:ListItem>1</asp:ListItem> <asp:ListItem>2</asp:ListItem> </asp:DropDownList> <asp:Label ID="Label1" runat="server">Test</asp:Label> but when I call ajax i get this error in asp: :( Control 'ctl00_ddl' of type 'DropDownList' must be placed inside a form tag with runat=server.

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  • Adding Controls Programatically

    - by Mike Keller
    I have a page I need to build out where depending on the selection the user made on a form on the page prior it displays a different set of questions for them to answer. So say the user selects Reason A from the form on page edit, then it needs to display Questions 1 and 2 on page edit_confirmation. But if they select Reason B then it needs to display Questions 3 and 4. I'm grabbing the reason code from the query string and have a switch statement set up, but I can't find anywhere how to output different controls. If Questions 1 and 2 are supposed to show up, one could be a text box and the other a checkbox, but if questions 3 and 4 are supposed to show up one may need to be a dropdown list and a checkbox.

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  • Adding a Way To preserve A Comma In A CSV To DataTable Function

    - by Nick LaMarca
    I have a function that converts a .csv file to a datatable. One of the columns I am converting is is a field of names that have a comma in them i.e. "Doe, John" when converting the function treats this as 2 seperate fields because of the comma. I need the datatable to hold this as one field Doe, John in the datatable. Function CSV2DataTable(ByVal filename As String, ByVal sepChar As String) As DataTable Dim reader As System.IO.StreamReader Dim table As New DataTable Dim colAdded As Boolean = False Try ''# open a reader for the input file, and read line by line reader = New System.IO.StreamReader(filename) Do While reader.Peek() >= 0 ''# read a line and split it into tokens, divided by the specified ''# separators Dim tokens As String() = System.Text.RegularExpressions.Regex.Split _ (reader.ReadLine(), sepChar) ''# add the columns if this is the first line If Not colAdded Then For Each token As String In tokens table.Columns.Add(token) Next colAdded = True Else ''# create a new empty row Dim row As DataRow = table.NewRow() ''# fill the new row with the token extracted from the current ''# line For i As Integer = 0 To table.Columns.Count - 1 row(i) = tokens(i) Next ''# add the row to the DataTable table.Rows.Add(row) End If Loop Return table Finally If Not reader Is Nothing Then reader.Close() End Try End Function

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  • Making a WCF call with AJAX

    - by DotnetDude
    Is it required to use a RESTful service to be able to make a ajax call to a wcf service (for example: by using WebInvoke attribute on Operation contracts) Once a service is made RESTful by adding a webHttp binding on the service host, can the host have other endpoints as well? (wsHttp or netTcp) Is it required that the aspNetCompatibilityEnabled be set to true for a service that has webHttp binding (and can this setting coexist for other endpoints) I understand I can use both JQuery and ScriptManager for making WCF calls on the client. Why should I use one over the other?

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  • PropertyGrid + interface

    - by nilphilus
    public interface ITest { void Somethink(); } public class Test1 : ITest { public void Somethink() { /* do stuff */ } public int Test1Property { get; set; } } public class Test2 : ITest { public void Somethink() { /* do stuff */ } public float Test2Property { get; set; } } //Main class public class MainClass { [TypeConverter(ExpandableObjectConverter)] public ITest test { get; set; } } Ok, i have sth like this. Instance of MainClass is selected by PropertyGrid. How to make a DropDownList of objects of classes which implement ITest (here Test1 and Test2)

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  • Update Statement Updates 0 Rows via the C# Winform Application?

    - by peace
    First of all, please help me out! I can not take this anymore. I could not find where the error is located. Here is my problem: I'm trying to update a row via c# winform application. The update query generated from the application is formatted correctly. I tested it in the sql server environment, it worked well. When i run it from the application i get 0 rows updated. Here is the snippet that generates the update statement using reflection - don't try to figure it out. Carry on reading after the code portion: public void Update(int cusID) { SqlCommand objSqlCommand = new SqlCommand(); Customer cust = new Customer(); string SQL = null; try { if ((cusID != 0)) { foreach (PropertyInfo PropertyItem in this.GetType().GetProperties()) { if (!(PropertyItem.Name.ToString() == cust.PKName)) { if (PropertyItem.Name.ToString() != "TableName") { if (SQL == null) { SQL = PropertyItem.Name.ToString() + " = @" + PropertyItem.Name.ToString(); } else { SQL = SQL + ", " + PropertyItem.Name.ToString() + " = @" + PropertyItem.Name.ToString(); } } else { break; } } } objSqlCommand.CommandText = "UPDATE " + this.TableName + " SET " + SQL + " WHERE " + cust.PKName + " = @cusID AND PhoneNumber = " + "'" + "@phNum" + "'"; foreach (PropertyInfo PropertyItem in this.GetType().GetProperties()) { if (!(PropertyItem.Name.ToString() == cust.PKName)) { if (PropertyItem.Name.ToString() != "TableName") { objSqlCommand.Parameters.AddWithValue("@" + PropertyItem.Name.ToString(), PropertyItem.GetValue(this, null)); } else { break; } } } objSqlCommand.Parameters.AddWithValue("@cusID", cusID); objSqlCommand.Parameters.AddWithValue("@phNum", this.PhoneNumber); DAL.ExecuteSQL(objSqlCommand); } else { //AppEventLog.AddWarning("Primary Key is not provided for Update.") } } catch (Exception ex) { //AppEventLog.AddError(ex.Message.ToString) } } This part below: objSqlCommand.CommandText = "UPDATE " + this.TableName + " SET " + SQL + " WHERE " + cust.PKName + " = @cusID AND PhoneNumber = " + "'" + "@phNum" + "'"; generates dml: UPDATE CustomerPhone SET PhoneTypeID = @PhoneTypeID, PhoneNumber = @PhoneNumber WHERE CustomerID = @cusID AND PhoneNumber = '@phNum' @PhoneTypeID and @PhoneNumber are gotten from two properties. We assigned the value to these properties in the presentation layer from the user input text box. The portion below where fetches the values: objSqlCommand.Parameters.AddWithValue("@" + PropertyItem.Name.ToString(), PropertyItem.GetValue(this, null)); The code below fills the values of WHERE: objSqlCommand.Parameters.AddWithValue("@cusID", cusID); objSqlCommand.Parameters.AddWithValue("@phNum", this.PhoneNumber); The final code should look as: UPDATE CustomerPhone SET PhoneTypeID = 7, PhoneNumber = 999444 WHERE CustomerID = 500 AND PhoneNumber = '911'; Phone type id is 7 - user value that is taken from text box Phone number is 999444 - user value that is taken from text box The above final update statement works on the sql environment, but when running via the application, the execute non query runs ok and gets 0 rows updated! I wonder why?

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  • Is it possible get the functionality of namespaces inside a class?

    - by CowKingDeluxe
    I have the following code: Public Class Form1 Private Function Step1_Execute() As Boolean Return Step1_Verify() End Function Private Function Step1_Verify() As Boolean Return True End Function Private Function Step2_Execute() As Boolean Return Step2_Verify() End Function Private Function Step2_Verify() As Boolean Return True End Function End Class What I would like to do is be able to separate the code, similar to the following (which obviously doesn't work): Public Class Form1 Namespace Step1 Private Function Step1_Execute() As Boolean Return Step1_Verify() End Function Private Function Step1_Verify() As Boolean Return True End Function End Namespace Namespace Step2 Private Function Step2_Execute() As Boolean Return Step2_Verify() End Function Private Function Step2_Verify() As Boolean Return True End Function End Namespace End Class I would like the functionality of namespaces inside of a class, as in something that would let me call Step2.Execute() instead of having to put Step2_ in front of a whole bunch of functions. I don't want to have to create separate classes / modules for step1, step2, etc. Is there a way that I can accomplish namespace functionality from inside a class?

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  • Business applications suck, is there anything else out there?

    - by GenEric35
    It seems most of the work is in business is applications like inventory, sales, banks, medical, human resources, government, insurance, document processing, file archiving etc. Would you agree? From my point of view business applications seem to occupy over 90% of the job offerings(because no one wants to work on those?). Furthermore, each big app I have worked on, the application itself sucked, like being paid in compensation for putting up with a bad code base and product. Seeing how those business apps seem to occupy most of the market, should one accept that this is just the sad reality of this business? Do you get to develop on projects that are more dynamic than those?

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  • Studying for the 70-564 exam

    - by Pete
    Besides the searching MSDN with the course outline, there is little out there to help prepare for the 70-564 exam . Some say that using the 70-547 Training Kit book helps, but does anyone know (as a rough percentage) how much of the 70-547 book covers the 70-564 exam?

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  • HttpSessionState Where, How, Advantages?

    - by blgnklc
    You see the code below, how I did use the session variable; So the three questions are; 1- Where are they stored? (Server or Client side) 2- Are they unique for each web page visitor? 3- Can I remove it using ajax or simple js code when my job is done with it? or it will be removed automatically..? sbyte[][] arrImages = svc.getImagesForFields(new String[] { "CustomerName", "CustomerSurName" }); Dictionary<string, byte[]> smartImageData = new Dictionary<string, byte[]>(); int i = 0; foreach (sbyte[] bytes in arrImages) { smartImageData.Add(fieldNames[i], ConvertToByte(bytes)); i++; } Session.Add("SmartImageData", smartImageData);

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  • Reflection and Generics get value of property

    - by GigaPr
    Hi i am trying to implement a generic method which allows to output csv file public static void WriteToCsv<T>(List<T> list) where T : new() { const string attachment = "attachment; filename=PersonList.csv"; HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.AddHeader("content-disposition", attachment); HttpContext.Current.Response.ContentType = "text/csv"; HttpContext.Current.Response.AddHeader("Pragma", "public"); bool isFirstRow = true; foreach (T item in list) { //Get public properties PropertyInfo[] propertyInfo = item.GetType().GetProperties(); while (isFirstRow) { WriteColumnName(propertyInfo); isFirstRow = false; } Type type = typeof (T); StringBuilder stringBuilder = new StringBuilder(); foreach (PropertyInfo info in propertyInfo) { //string value ???? I am trying to get the value of the property info for the item object } HttpContext.Current.Response.Write(stringBuilder.ToString()); HttpContext.Current.Response.Write(Environment.NewLine); } HttpContext.Current.Response.End(); } but I am not able to get the value of the object's property Any suggestion? Thanks

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  • Open generic interface types of open implementation don't equal interface type?

    - by George Mauer
    Here's a test that should, in my opinion be passing but is not. [TestMethod] public void can_get_open_generic_interface_off_of_implementor() { typeof(OpenGenericWithOpenService<>).GetInterfaces().First() .ShouldEqual(typeof(IGenericService<>)); } public interface IGenericService<T> { } public class OpenGenericWithOpenService<T> : IGenericService<T> { } Why does this not pass? Given Type t = typeof(OpenGenericWithOpenService<>) how do I get typeof(IGenericService<)? I'm generally curious, but if you're wondering what I'm doing, I'm writing a Structuremap convention that forwards all interfaces implemented by a class to the implementation (as a singleton).

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  • Is it possible to refactor this C# if(..) statement?

    - by Pure.Krome
    Hi folks, simple question :- i have the following simple if (..) statements :- if (foo == Animal.Cat || foo == Animal.Dog) { .. } if (baa == 1|| baa == 69) { .. } is it possible to refactor these into something like ... DISCLAIMER: I know this doesn't compile .. but this is sorta what i'm trying to get... if (foo == (Animal.Cat || Animal.Dog)) { .. } if (baa == (1 || 69)) { .. } Cheers :) EDIT I wonder if a lambda expression extension could do this? :P

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  • Login failed for user ''. The user is not associated with a trusted SQL Server connection

    - by Tony_Henrich
    My web service app on my Windows XP box is trying to log in to my sql server 2005 database on the same box. The machine is part of a domain. I am logged in in the domain and I am an admin on my machine. I am using Windows Authentication in my connection string as in "Server=myServerAddress;Database=myDataBase;Trusted_Connection=True". SQLServer is configured for both types of authentication (mixed mode) and accepts remote connections and accepts tcp and named pipes protocols. Integrated authentication is enabled in IIS and with and without anonymous access. 'Everyone' has access to computer from network setting in local security settings. ASPNET is a user in the sql server and has access to the daatabase. user is mapped to the login. The app works fine for other developers which means the app shouldn't be changed (It's not new code). So it seems it's my machine which has an issue. I am getting the error "Login failed for user ''. The user is not associated with a trusted SQL Server connection" Note the blank user name. Why am I getting this error when both the app and database are on my machine? I can use SQL Server authentication but don't want to. I can connect to the database using SSMS and my Windows credentials. It might be related to setspn, kerberos, delegation, AD. I am not sure what further checks to make?

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  • Creating a Non-Databound Report in Winforms

    - by Jon
    I am using Visual Studio 2008 and all the components that come with it as well as Infragisitics for Winforms. I need to design a label that will print to a label printer. None of the controls are databound and will most likely be set in code eg/Label.Text = "My Heading"; as there will be minimal information on the label. One piece of information is a barcode so I need the functionality to do that, I assume I can just set the font of the label to barcode and it will do its thing. Can I just add a Crystal Report to a form design it, set the label text properties in code, tell it what printer to print to and then call report.Print(); I've had a quick go and seems not as easy as I thought. Thanks

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  • Validate Div tag seperately...

    - by Joby Kurian
    i have 3 div tags.Each having no. of textboxs and button.Each textbox having validation.For all button causesvalidation property is true.If i click "button1" in "div1" tag will cause validation of other textbox in other div tags.I dont want to do this ? How to avoid this?

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  • URL losing port number in every page load

    - by MarceloRamires
    I'm currently taking care of a certain local website. The default port has been changed, and can no longer be not included in the URL due to technical reasons, so now i'm using a certain port in the end of the IP at the URL, for example 100.100.100.100/website.asp no longer works 100.100.100.100:10/website.asp with the port, works. Works, though I can't click in any link or anything and the port vanishes (new page doesn't load). Then I keep the same URL and just include the port at the end of the IP and it works again, until I click in another link inside of it. I have access to changing each link, but I guess that would not be the right approach. How should I procceed ?

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  • Invalid Cast Exception with Update Panel

    - by user1593175
    On Button Click Protected Sub btnSubmit_Click(sender As Object, e As System.EventArgs) Handles btnSubmit.Click MsgBox("INSIDE") If SocialAuthUser.IsLoggedIn Then Dim accountId As Integer = BLL.getAccIDFromSocialAuthSession Dim AlbumID As Integer = BLL.createAndReturnNewAlbumId(txtStoryTitle.Text.Trim, "") Dim URL As String = BLL.getAlbumPicUrl(txtStoryTitle.Text.Trim) Dim dt As New DataTable dt.Columns.Add("PictureID") dt.Columns.Add("AccountID") dt.Columns.Add("AlbumID") dt.Columns.Add("URL") dt.Columns.Add("Thumbnail") dt.Columns.Add("Description") dt.Columns.Add("AlbumCover") dt.Columns.Add("Tags") dt.Columns.Add("Votes") dt.Columns.Add("Abused") dt.Columns.Add("isActive") Dim Row As DataRow Dim uniqueFileName As String = "" If Session("ID") Is Nothing Then lblMessage.Text = "You don't seem to have uploaded any pictures." Exit Sub Else **Dim FileCount As Integer = Request.Form(Request.Form.Count - 2)** Dim FileName, TargetName As String Try Dim Path As String = Server.MapPath(BLL.getAlbumPicUrl(txtStoryTitle.Text.Trim)) If Not IO.Directory.Exists(Path) Then IO.Directory.CreateDirectory(Path) End If Dim StartIndex As Integer Dim PicCount As Integer For i As Integer = 0 To Request.Form.Count - 1 If Request.Form(i).ToLower.Contains("jpg") Or Request.Form(i).ToLower.Contains("gif") Or Request.Form(i).ToLower.Contains("png") Then StartIndex = i + 1 Exit For End If Next For i As Integer = StartIndex To Request.Form.Count - 4 Step 3 FileName = Request.Form(i) '## If part here is not kaam ka..but still using it for worst case scenario If IO.File.Exists(Path & FileName) Then TargetName = Path & FileName 'MsgBox(TargetName & "--- 1") Dim j As Integer = 1 While IO.File.Exists(TargetName) TargetName = Path & IO.Path.GetFileNameWithoutExtension(FileName) & "(" & j & ")" & IO.Path.GetExtension(FileName) j += 1 End While Else uniqueFileName = Guid.NewGuid.ToString & "__" & FileName TargetName = Path & uniqueFileName End If IO.File.Move(Server.MapPath("~/TempUploads/" & Session("ID") & "/" & FileName), TargetName) PicCount += 1 Row = dt.NewRow() Row(1) = accountId Row(2) = AlbumID Row(3) = URL & uniqueFileName Row(4) = "" Row(5) = "No Desc" Row(6) = "False" Row(7) = "" Row(8) = "0" Row(9) = "0" Row(10) = "True" dt.Rows.Add(Row) Next If BLL.insertImagesIntoAlbum(dt) Then lblMessage.Text = PicCount & IIf(PicCount = 1, " Picture", " Pictures") & " Saved!" lblMessage.ForeColor = Drawing.Color.Black Dim db As SqlDatabase = Connection.connection Using cmd As DbCommand = db.GetSqlStringCommand("SELECT PictureID,URL FROM AlbumPictures WHERE AlbumID=@AlbumID AND AccountID=@AccountID") db.AddInParameter(cmd, "AlbumID", Data.DbType.Int32, AlbumID) db.AddInParameter(cmd, "AccountID", Data.DbType.Int32, accountId) Using ds As DataSet = db.ExecuteDataSet(cmd) If ds.Tables(0).Rows.Count > 0 Then ListView1.DataSource = ds.Tables(0) ListView1.DataBind() Else lblMessage.Text = "No Such Album Exists." End If End Using End Using 'WebNavigator.GoToResponseRedirect(WebNavigator.URLFor.ReturnUrl("~/Memories/SortImages.aspx?id=" & AlbumID)) Else 'TODO:we'll show some error msg End If Catch ex As Exception MsgBox(ex.Message) lblMessage.Text = "Oo Poop!!" End Try End If Else WebNavigator.GoToResponseRedirect(WebNavigator.URLFor.LoginWithReturnUrl("~/Memories/CreateAlbum.aspx")) Exit Sub End If End Sub The above code works fine.I have added an Update Panel in the page to avoid post back, But when i add the button click as a trigger <Triggers> <asp:AsyncPostBackTrigger ControlID="btnSubmit" /> </Triggers> in the update panel to avoid post back, i get the following error.This happens when i add the button click as a Trigger to the update panel.

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  • Enum.TryParse with Flags attribute

    - by Sunny
    I have written code to TryParse enum either by value or by its name as shown below. How can I extend this code to include parsing enums with Flags attribute? public static bool TryParse<T>(this T enum_type, object value, out T result) where T : struct { return enum_type.TryParse<T>(value, true, out result); } public static bool TryParse<T>(this T enum_type, object value, bool ignoreCase, out T result) where T : struct { result = default(T); var is_converted = false; var is_valid_value_for_conversion = new Func<T, object, bool, bool>[]{ (e, v, i) => e.GetType().IsEnum, (e, v, i) => value != null, (e, v, i) => Enum.GetNames(e.GetType()).Any(n => String.Compare(n, v.ToString(), i) == 0) || Enum.IsDefined(e.GetType(), v) }; if(is_valid_value_for_conversion.All(rule => rule(enum_type, value, ignoreCase))){ result = (T)Enum.Parse(typeof(T), value.ToString(), ignoreCase); is_converted = true; } return is_converted; } Currently this code works for the following enums: enum SomeEnum{ A, B, C } // can parse either by 'A' or 'a' enum SomeEnum1 : int { A = 1, B = 2, C = 3 } // can parse either by 'A' or 'a' or 1 or "1" Does not work for: [Flags] enum SomeEnum2 { A = 1, B = 2, C = 4 } // can parse either by 'A' or 'a' // cannot parse for A|B Thanks!

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  • asp:QueryStringParameter and empty query string parameter

    - by abatishchev
    I haveasp:GridView displaying client requests using asp:SqlDataSource. I want to limit displayed information by client: View.aspx has to display everything, View.aspx?client=1 has to display only requests from client ID #1. So I'm using <asp:QueryStringParameter Name="client" QueryStringField="client" /> for query "EXEC getRequests @client". Everything works properly when some client is specified. But don't - if not. I tested my SP using SSMS - it works properly in both cases - when parameter is specified and when it isn't (NULL passed explicitly). What have I do?

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