vb.net

问题 I am inserting data from my vb.net application to msaccess db. I am confused in way of getting the last inserted record added to a table. IN MS-SQL we get @@IDENTITY for that but it didn't worked for me in MSAccess. so what should be do for getting the last inserted record added to a table? 回答1: Example: Dim db As Database Set db = CurrentDb db.Execute "INSERT INTO Table1 (atext) Values('abc')", dbFailOnError Dim rs As dao.Recordset Set rs = db.OpenRecordset("select @@identity") Debug.Print

问题 In my previous question heading as bellow: " How to avoid Linked Table manager message while opening the Access DB ." I have asked how to disable Macro (programmatically vb.net) while opening the MSAccess DB and I got some good reference and code samples to do so. But unfortunately I could not able to achieve the expected result. I have tried API to enable/disable Keys (SHIFT) at run time and also use some command-line options programmatically but still it’s not working even not getting any

问题 In my previous question heading as bellow: " How to avoid Linked Table manager message while opening the Access DB ." I have asked how to disable Macro (programmatically vb.net) while opening the MSAccess DB and I got some good reference and code samples to do so. But unfortunately I could not able to achieve the expected result. I have tried API to enable/disable Keys (SHIFT) at run time and also use some command-line options programmatically but still it’s not working even not getting any

问题 I am trying to create a program that parses an expression such as 3x^3 + 7x^2 + 6x - 9 . I am using a recursive system to do this. At the moment, I'm just testing to see if I get the correct output for the expression I input by only using constants in the expression. The code works fine with most expressions, but when I have a minus followed by a positive, both terms are subtracted (first term should be subtracted, second term should be added). An example of this is entering 4*3^2-7*3+5*3 .

问题 I am trying to create a program that parses an expression such as 3x^3 + 7x^2 + 6x - 9 . I am using a recursive system to do this. At the moment, I'm just testing to see if I get the correct output for the expression I input by only using constants in the expression. The code works fine with most expressions, but when I have a minus followed by a positive, both terms are subtracted (first term should be subtracted, second term should be added). An example of this is entering 4*3^2-7*3+5*3 .

问题 The HttpClientHandler can be used as a parameter when creating a HttpClient object, but after that there doesn't seem to be any way to access the handler without keeping a reference to it. Dim Handler as New HttpClientHandler Handler.CookieContainer = Cookies Handler.Proxy = Proxy Handler.UseProxy = True Handler.AutomaticDecompression = DecompressionMethods.GZip Or DecompressionMethods.Deflate Dim Client as New HttpClient(Handler, True) Am I able to change the properties of a handler of an

问题 In the past, I have written an application that dynamically loads a DLL and all of it's dependencies based upon a value in a database, as below (sanitised some parameters) VB Dim oType As System.Type Dim oAssembly As System.Reflection.Assembly Dim oObject As System.Object oAssembly = Assembly.LoadFrom(path) oType = oAssembly.GetType("LogicValidator") oObject = Activator.CreateInstance(oType) oObject.Initialise("param1", "param2", "param3", AuditTrail, UserInfo, workingDir) Console.WriteLine(

问题 Thanks to the following code i create and add images - as thumbnails - to the FlowLayoutPanel. The implementation is pretty simple. I read the available images within the directory and call the following sub procedure. Private Sub LoadImages(ByVal FlowPanel As FlowLayoutPanel, ByVal fi As FileInfo) Pedit = New DevExpress.XtraEditors.PictureEdit Pedit.Width = txtIconsWidth.EditValue Pedit.Height = Pedit.Width / (4 / 3) Dim fs As System.IO.FileStream fs = New System.IO.FileStream(fi.FullName,

问题 I was wondering if it is possible to make particular days unavailable from the calendar (DatePicker), more specifically every Monday and Tuesday. I have found similar threads (How do create a DatePicker with only Sundays enabled? and Disable specific days of the week on jQuery UI datepicker) about blacking out dates, however, I have not been able to modify their code for my specific goal. I'm writing this application in VB.NET (WPF). The functions I used so far, for blacking out dates are:

问题 I was wondering if it is possible to make particular days unavailable from the calendar (DatePicker), more specifically every Monday and Tuesday. I have found similar threads (How do create a DatePicker with only Sundays enabled? and Disable specific days of the week on jQuery UI datepicker) about blacking out dates, however, I have not been able to modify their code for my specific goal. I'm writing this application in VB.NET (WPF). The functions I used so far, for blacking out dates are: