.net - Retrieve Strings Via Reflection And Concatenate It Condescendingly?
Jun 28, 2011
I have a long string that has been divided into lots of smaller Strings using the following pattern:
Public Class Test
Public Prefix_1 as String = "1 to 100 bytes"
Public Prefix_2 as String = "101 to 200 bytes"
[code]....
And this Test class has been compiled as class library project (i.e. a .dll file) and saved to C:Test.dll note that I have no prior knowledge of how many Prefix_ string existed in the dll file.My question is: How to retrieve all strings that start with Prefix_ via reflection and concatenate it ascending-ly (i.e. Prefix_1 & Prefix_2 ... ) into a single string?
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
Is there a way to use [string].Join to concatenate html stings including spaces? I want to join html strings with a special character so I can pass them as an array to javascript from the code behind.
Dim Array(100) As String ArrayString = [String].Join(",", Array)
This works great if each item in Array is one word only, but what if each item in Array contains spaces?
So, what I have is a windows form with multiple user selections. I need to display one message box upon click which concatenates strings based on the users input. The message box needs to show each specific reason why the user is declined. I'm typing out some really basic pseudocode below to give the basic structure of what I'm trying to do. [code]
I want to retrieve private (implementation and other) methods of a class which implements an interface and also is derived from (inherits) a base class.How can I achieve this using reflection?This is wat m tryin to do. I need to view these private methods and their contents, I don't want to invoke them.
Dim assembly As System.Reflection.Assembly Dim assemblyName As String assemblyName = System.IO.Path.GetFullPath("xyz.dll") assembly = System.Reflection.Assembly.LoadFile(assemblyName) assembly.GetType("myClass").Getmethods(Bindings.NonPublic) assembly.GetType("myClass").GetMethods(BindingFlags.NonPublic) isn't working
I know that the MenuItem class contains an internal class named MenuItemData, which contains itself an internal member named onDrawItem. Given a MenuItem, I want to retrieve the object corresponding to the member onDrawItem. But all I manage to do is to get the FieldInfo, not the object itself.
Here is my code: Dim obj As Object Dim fi As FieldInfo Dim item as System.Windows.Forms.MenuItem Dim mType As System.Type [Code] .....
Imagine there is a very large html file with of course lots of html tags. I cannot load the entire file into memory. My intention is to extract all indexes for this <p> and this </p> strings. How should I achieve it?
My program is supposed to Concatenate the name to the end of the message.I can not get it to do so.. Here is my code.
Private Sub picOn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles picOn.Click picOn.Visible = False picOff.Visible = True[code]...........
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
I have a filename in a string. I want to split the given string into 2 (1 is filename without extension, 2 is only extension) strings. Then add _dev to the end of first string and concatenate with 2nd one.
ex: Dim name as string="abc.txt" Dim finalName as string
in an sql table there's an id, first name and last name field. i'd like to concatenate the first and the last name fields and display it as one in a dropdown control.
this is the vb.net code:
con() sqry = "[SELECT QUERY]" sqcom = New SqlCommand(sqry, sqcon)
[Code]....
^this code displays only the first name. how do i go about concatenating in asp.net?
I had a previous thread asking how to make an unbound column work, but quickly found that this causes huge performance issues. I have a table called TieIns, it contains a column TieIn_ID and some other various information.
Ok I am a newbie and I need to concatenate a number and an integer. Can somebody give me a idea on how to accomplish the following/I need to take the number (which is an integer from a simple math function) and the letter A and create something like "A10" or "A45" or "A123". Can someone please give me a tip on how to accomplish this?The program creates the integer by using the value of a drop down box and a reference number of 9. The maximum value will be 109 and the minimum is 10. It needs to be combined with the letter A, which does not change.
I do have a multi select dropdown box.I want all the selected items uin in a string with comma seperated value.[code]I want a shortcut like join to accomplish the task.
I have a spreadsheet, in which I need to concatenate certain cells.Basically if the ID cell is blank then I need to concatenate the description cell with the previous description cell and delete the row.In your opinion what is the best way to do this:
a) Should I read the excel file into a dataset, process the dataset and write back to excel?
b)Should I directly Edit spreadsheet?
BTW the spreadsheet has 13,000 rows, hence the need for automation?
I am supporting an application, which uses lots of String concatenations and I believe this is the cause of a memory leak which eventually causes an OutOfMemory exception. Please have a look at the code below:
Public Sub ConcatenateString() As String Dim Test1 As String Test1 = "Hello" Test1=Test1 & "my" Test1=Test1 & "name"
[code]....
I believe there are nine Strings in memory at line ten as String is an immutable object, but only one reference to the String Test1 that contains: "Hello my name is Joe Blogs what is yours?". My question is; are all of these Strings picked up by the garbage collector when they go out of scope? i.e. when the sub routine finishes running. I seem to have a memory leak and am thinking that I should really be using a StringBuilder object.
In our school theres a programming class and the teachers gone for the week and the sub is starting to get very frustrated, so I offered to help in any way i can. I have never programmed Visual Basic but I have programmed Ms-Dos, Javascript, HTML, *.vbs, *.ahk, *.gml, and a variety of other languages.
The class is going to build a program that calculate how many rabbits are born in a family. So when they click the button it shows in a text box the actual equation and then the answer after the equal sign that where i assume concatenation comes in.Here's the code I've thrown together for when the buttons pressed:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim RabitAmount As Integer Dim ShowEquation As String
[code]....
I got the equation to answer it self and show in the text box but it won't show the equation?
i wish to concatenate date and time from 2 different datetimepicker after concatenated I want it to be save in sql database format which is yyyy-MM-dd HH:mm:ss
I'm doing half way and my query is like below.
Dim insertCmd As New SqlCommand(Sqlstr, connection) insertCmd.Parameters.Add("@School_Subject", Data.SqlDbType.NVarChar).Value = txtSchoolSubject.Text
This seems basic but here's my problem. I am trying to build my connect string as a public variable that will connect to either an express version of SQL Server or a non-express version. The app.config defines it as being express or not and is modified to the user's choosing when it is deployed using the a firstRun routine.
The problem is that even though I'm modifying the value of the variable SQLexpress when the app is initiated which in turn should modify the value of the variable g_strConnectionString it doesn't. The value of g_strConnectionString will always take on the initial value of SQLexpress. I know I can define 2 separate variables for the connection string but I'd prefer not to have to change all of the references throughout each of the various programs in this system as they all have the same issue.
So in the following load event I've traced it and when it sets globals.SQLexpress = "", I then look at the value of g_strConnectionString and it still contains "SQLEXPRESS". It seems I need to somehow force vb to refresh this variable after it's been changed.
Does anyone know how I can go about concatenating multiple columns from a table to populate into a combobox? I have 4 columns from which I need the data to show up in 1 line when clicking on the dropdown/combobox list. I'm not sure if I have to deal with the display member or the value member.
