.net - How To Returned A TYPED Result
Apr 18, 2011I would like to define Sorted to be of type ErrorProviderMessageCollection, which is what unsortedCollection is defined as.
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Check When OLEDB Returned A Result From SELECT Statement?
Nov 25, 2009In my .NET application I have to get results from a MS Access database. I would like to add error checking to make sure a row was returned from my SELECT statement.
View 1 RepliesJson Result Is Being Returned Wrapped In Double Quotes?
Jun 4, 2011I am trying to return a json string via jQuery of an object using the following function. The problem I do not seem to be able to overcome is my json result comes out the other end wrapped in double quotes.
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VS 2008 - Get Record Returned From Table And Put Result In Textbox?
Oct 16, 2009I want to be able to get the one record I return from a table and put the results into text box's directly rather than put the result into a combo box and then transfer the text across.
Private Sub GetStationStats()
conn.ConnectionString = myConnString
Dim myCommandStationStats As New MySqlCommand
Dim myAdapterStationStats As New MySqlDataAdapter
Dim myDataStationStats As New DataTable
Dim SQLStationStats As String
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The fields Signon and SignOff, plus many others which I didn't include in this sub. Above code does work, its how to get it into a text box.....
End Result Of Combobox Selection Keep Showing Same Multiple End Result When There Is Only One Entry?
Dec 10, 2010I am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
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IDE :: When There Is No Result In Grid Result Column, Disable The Save Button
Sep 25, 2010I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
View 2 RepliesMake An Array And Put Result Every Time The Serial Port Gives A New Result?
Oct 14, 2009I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
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Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
Change Typed Dataset To Shared Typed Dataset?
Aug 9, 2009I create one typed dataset by dataset designer in VS2008. How can I change this dataset to shared typed dataset?
View 6 RepliesLimit Result Being Put Into DataSet And Get Next Result From Database
Apr 16, 2010I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
.net Encryption Result Does Not Match The Xcode Encryption Result Given The Same Input Parameters?
Jun 21, 2011I have set up a method in vb.net and in xcode for encrypting a string using as far as i can tell the same parameters for an AES encryption.I've looked all over the place but cannot find information on whether they use the same encryption algorithm and settings.
this is the vb.net code:
Dim encryptAES As New AesCryptoServiceProvider()
Dim encoding As New UTF8Encoding()
Dim encryptor As ICryptoTransform
encryptAES.Key = encoding.GetBytes("12345678901234567890123456789032")
encryptAES.IV = encoding.GetBytes("1234567890123416")
encryptAES.Mode = CipherMode.CBC
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IDE :: Can't See What Have Typed
Dec 9, 2011Once in a while, I can't see what I have typed until I move to the next line. Same thing if I try to backspace, the cursor doesn't move until I leave the line. I can fix the problem by closing VS and restarting it.
VS 2010/VB on XP SP3
Microsoft Visual Studio 2010
Version 10.0.30319.1 RTMRel
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Set A Field Value To A Value That Typed?
Aug 21, 2009Is there anyone who knows how to set a field value to a value that I typed? I have an Xtragrid, binded to sql database and I wanna set the dateedited column to todays date when user changes any field on the grid . Since I'm using devexpress I can't just type columnname and set the text to the value I wanted.
View 1 RepliesAdd Data To A Typed Dataset?
Jun 25, 2010I created a dataset in Visual Studio 2010 containing two tables: tblCategories and tblAnswers. tblCategories has two columns: CategoryNumber (AutoNumber and primary key) and CategoryName. tblAnswers has three columns: AnswerNumber (AutoNumber and primary key), Answer, and CategoryNumber. The CategoryNumber columns in each table are related. I have a command button which I want to use to add a record to the CategoryName column in tblCategories with the data typed in a textbox. When I try to access the dataset to add a new row(dataset.tblCategoriesDataTable.NewRow), the NewRow method isn't present. I've done some reading which suggests that I need a TableAdapter, but it seems like that is for connecting to an external file because I have to select a connection. I have no external SQL files or database. I want the user to be able to create a database within my program.
View 1 RepliesConvert C# (with Typed Events) To .NET?
Apr 22, 2010I have an ASPX page (with VB Codebehind). I would like to extend the GridView class to show the header / footer when no rows are returned. I found a C# example online (link) (source). However, I cannot convert it to VB because it uses typed events (which are not legal in VB).
I have tried several free C# to VB.NET converters online, but none have worked.convert the example to VB.NET or provide an alternate method of extending the GridView class.Notes / Difficulties:
If you get an error with DataView objects, specify the type as System.Data.DataView and the type comparison could be the following: If data.[GetType]() Is GetType(System.Data.DataView) Then
Since the event MustAddARow cannot have a type in VB (and RaiseEvent event doesn't have a return value), how can I compare it to Nothing in the function OnMustAddARow()?
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Get Text What Typed In A Textbox?
Sep 28, 2009Name: RyDeR (RyDeR is what I typed in the Textbox) Age: 17 (17 is what I typed in the Textbox) But now I have another Textbox but I want that this textbox automatic changes with what I type in the first boxes. Example:
His name is 'RyDeR' He's '17' years old
.. Like this and if I type something else, it must change to in last textbox.
Get The Last Letter The User Typed In?
Oct 24, 2009How would i get the last letter the user typed in?
View 8 RepliesIs .NET Weakly Typed Compared To C#
Apr 15, 2011Yesterday I was at an interview where my interviewer (who admittedly didn't claim to be an expert on the subject) stated that "VB.NET is more weakly typed then C#" - (At the same time he couldn't recall an example). This statement seemed incorrect to me (particularly given that both languages use the same framework libraries for their types) and I advised as such and that perhaps he was confused with the option to turn Option Strict or Option Infer on/off.
At the same time I know that VB.NET has situations where it will do type coercion - leading to occasionally unexpected results (although I also cant recall under what conditions) - (Actually I think I just remembered that it was mainly when performing arithmetic operations with different types - whereas other languages will force you to be explicit (?) ).
Prevent Spaces From Being Typed In?
Nov 19, 2009Is there a way to easily prevent spaces from being typed in, particularly in the column I have called Name?
For some reason, all attempts that I have tried have failed!
Read What Has Been Typed In A Console App
Jun 23, 2011i want to create a console app that looks for specific commands that are imputed, such as "download [URL]
View 14 RepliesTake Action When A Word Is Typed?
Apr 1, 2012What is a code that I can use for my program to do something when the user types a certain word into a rich text box?
View 11 RepliesTyped DataSet - InvalidCastException
Sep 12, 2011I've got a typed dataset. I bind the data with a binding source to a form with arround 200 textboxes, dataedits and so on. Everything works fine with one exception:In my database I have empty DateTimes (DBNull.Value). And when they get bound to a DateEdit-Control, I get the following exceptions:
A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll
A first chance exception of type 'System.Data.StrongTypingException' occurred in myTestDLL.dll
I tried to change the NullValue-Property in the DataSet-Desinger to something else as 'Throw Exception', but it doesn't work for a DateTime. For other types like Integer or String it works fine.I dont know a nice solution (right now I fill the empty dates with some dummy date and make it invisible in the DateEdit-Control, but this is very uncool) and I hope to find some help here.
Use Transaction With Typed DataSets?
Apr 30, 2010I have a DB application that I've created using the Datasources wizard. A particular insert requires that two inserts must be done at the same time meaning that it has got to use transaction. how to use transaction in this situation.Only performance counts!
View 5 RepliesVB .NET Question With Typed Dataset
May 25, 2010How do i use a while loop and MID$ function instead of the split function?i'm trying to have the input (textbox) compared to a list(array) in a text document?
View 2 RepliesWhy Are Interfaces Not Strongly Typed
Jan 8, 2010I have the following code compiles without issue. Of course, I get an invalid cast xception when executing the Dim C As IDoThingsC = GetThing_C(). Am I missing something?Would you ever want to return an object that does not meet the interface requirement for a function return value?
Public Class ClassA
Public Sub DoThings_A()
Debug.Print("Doing A things...")
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Asp.net - Get Scope_identity Returned Value?
Sep 24, 2010How can i get the scope identity parameter in my vb code. I have this so far....
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How can i retreive this ID, in the DetailsView1_ItemInserted?
Asp.net - Subquery Returned More Than 1 Value?
Nov 8, 2011I know this topic is all over the place, but I am not doing an INSERT, UPDATE, DELETE. My statement is a plain and simple SELECT statement and so far has worked with 116 different items in my database until I got to one.
I have a search engine and am going through every single product in our database to add information to it. This is all done through the website, but when I search for ProductID 331 and click on it, it goes to the error page that says Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
It doesn't make any sense to me that the website would error with only this one product. This is the statement I am using. Does anyone know why 1 product would be causing this error?
WebService:
Public Class ProductSearch
Inherits System.Web.Services.WebService
<WebMethod()> _
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Files Returned Just Don't Look Right
Apr 5, 2009what i'm aiming at doing here is returning every file on my drive that hasn't been accessed in 90 days. The first listbox has all the directories and the second works off that to return all the files... [code]
View 3 RepliesHow To Get Another Function's Returned Value
Apr 4, 2012How to give another function's returned value in LINQ.[code]but in above query I should write code to store the return value of GetObjProperty Value(p) and add obj-p and returnValue combination to the dictionary.The last line below code is wrong. but please suggest me how to correct it. My intention is, I want output collection(say dictionary) of each fruitname and its color(returned by other function call) for all the fruits which the GetFruitColor is not nothing(it can be empty or valid string).[code]In above code last line is wrong. So how to put getFruitColor in k, how to correct it to save the k value and give me output as dictionary of fruit and k value.
View 1 RepliesHow To Use Returned Value From Function
Sep 5, 2010Why this code doesn't work? It returns an unexpected value actually total = 0.
total = Cscore(TextBox1.Text) * CDbl(TextBox2.Text)
When trying this
total = TextBox1.Text * TextBox2.Text
It returns the expected value but I need to pass textbox1.text to the function to get the desirable value
The function is this
Public Function Cscore(ByVal score As Integer) As Double
Select Case score
Case score = 100
Return 5.0
Case score >= 95
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SQL - Subquery Returned More Than 1 Value
Jul 27, 2009I get the following errors: Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression. If the subquery only return one result,then it works fine,but if the subquery return more than one results, then the error occurred,how can I resolve this error?
View 3 Replies