How would I find the index of an item in the a string array following code:
Dim arrayofitems() as String
Dim itemindex as UInteger
itemindex = arrayofitems.IndexOf("item test")
Dim itemname as String = arrayofitems(itemindex)
I'd like to know how I would find the index of an item in a string array. (All of the items are lowercase, so case shouldn't matter.)
I have a string array in the form [code] The above obviously doesn't work since it's an array. Is there a similar method for the string array.
View 1 RepliesI'm having a bit of trouble trying to iterate or search through my array (or structure).I am reading in some values from a file, and populating my array.Then, I need to search to compare to one of the values in my array.[code]any pointers? should I use something else instead of arrays / structures ?
View 4 RepliesWhat would be the simplest way to find the n-th position of delimiter in a string.For example, say, I have a string variable called FullFilePath that contains the path of a file, like, C:SourceFiles<mthyr><subject><filename>.txt From this, I would like to extract out mthyr, subject, and filename, using the delimiter, "".
I was hoping string.IndexOf would let me find the n-th position of the delimiter "", in which case I can use the result to do a string.Substring. But it looks like IndexOf only finds the first occurence of a certain string, which means I would have to interate this somehow to look for the n-th occurence.
Or is there another method that will help me do this more efficiently.
i want index of the first value in a string Without calling IndexOf.
Like, " I am going" and my search value is "am"
so it should give me index value as "2".
I have a string with 60000+ characters. I look for informations inside the string in a sequentially order. Every time I found a information I delete whatever is behind that information. In other words I reduce the size of the string every time I find something, and I do this using IndexOf and Remove, much like this:
vb.net Str = Str.Remove(0, Str.IndexOf("MyInfo"))
This can be quite heavy on the processor. So my question is it faster to look the informations using Regex or it would be about the same?
my code is :
[Code]...
The error is Value of type '1-dimensional array of string' cannot be converted to 'String'.
Could someone point me why the IndexOf returns always zero in the following text?
Dim Str as string = "<p><img class=floatLeft width="330"src="http://www.com"></p><p>"
Dim Idx as integer = Str.IndexOf("<p>")
Is there any other way, of getting the index?
I'm working on some code that was developed by the previous developer of an application and I don't understand why he used a certain syntax for IndexOf().This is the code (MyString is just an example of the string being searched for): [code] I can't seem to find any documentation for this unless it's inside of a loop where the number after the comma is incremented.
View 3 RepliesI have a text label, split half-and-half with a "/".label1.text = "I like dogs/I like cats"This will not be the same text (and not the same textlength)every times. I need to delete everything before the "/" with only a button. (for example, delete "I like dogs")
View 6 RepliesI'm just extracting some very small text from a bigger text file. So, suppose I'm getting a dl link from a " dl link here " tag, there are multiple download links and the way i'm 'extracting' the download link from there uses the indexof method. There are multiple download links, so how would I get the next indexof?
View 2 Repliesi have an array contains a-z.Then i have a textbox and when click on the button, it will replace the text inside the textbox to the index number of the array.Example, from "abc" will become "0 1 2" The code below do the job.how to do so that i can replace the text inside the textbox from "0 1 2" back to "abc" based on the array?
Dim txtKey As String = readKeyTxt.Text
readKeyTxt.Text = ""
For Each b As String In txtKey[code].....
substring and the indexOf method
I have this problem that I'm going in circles on. The error message is "no accessible IndexOf can be called with these arguments."
My professor said that "to search for the string Los Angeles and substring will return it from the textbox, but it needs to know what position to start returning a word at, and that is where the IndexOf comes in." Does that mean substring and IndexOf are used together? That's what I did and may be the problem. Here's the code:
Private Sub btnOrder_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnOrder.Click
'Declare variables
[Code]....
I'm filter my Listview with cboMonth my format date MM/dd/yyyy..Now I want change my format date dd-MM-yyyy.[code]
View 11 RepliesMy assignment in Visual Basic 2010 is to build a order form that has two text boxes, one for the name and the other for the address. And we're suppose to use the IndexOf method on the address. I understand that IndexOf returns the position of a character and the number of characters. What would be the purpose of using the IndexOf method on the address in this instance? I don't understand what I would be searching for when the user types in it's address that's going to be numbers and string characters. I think I understand what the IndexOf method does, somewhat, but why and what would I use it to achieve?
View 3 RepliesI need to append STRINg to Array and cast it 1-dimensionalArray
Dim remoteFileNames(0)
As
String
[Code]....
Here "FtpRemoteDirectory" is a string and ftpFileNames() is the Array String which list the FileNames.
and remoteFileNames is 1-dimension array
I am writing an OPC Client in VB.NET (2008) and I am using an OPC wrapper from Graybox. I am having some problems with the data types. I have an Array of String that contains all of the OPC Items that I wish to read from the OPC Server. When I attempt to use the Array of String, Option Strict causes the following compile error message:Error 5 Option Strict On disallows narrowing from type 'System.Array' to type '1-dimensional array of String' in copying the value of 'ByRef' parameter 'ItemIDs' back to the matching argument. How do I pass the Item ID's (all strings) in an array?
View 1 RepliesI'm having problems with marshaling in VB.NET to C++, here's the code :
In the C++ DLL :
struct APP_PARAM
{
[code].....
I have created an object hierarchy with nested generic listof() structures. I have created a treeview to match and graphically show the structure. I needed a way to show a property box of an object represented by the selected node on the treeview. So, I gave each of my objects a NodeIndex property, in which I would store the treeview.indexof(node) result, as shown below:
For Each oObject In oJob.ObjectListOfCollection
tnode = New TreeNode(oObject.Name)
Treeview.Nodes.Add(tnode)
[code].....
Can anyone give a good explanation of how the indexof method works and what is meant by "Index" ?
View 3 RepliesI have 10 lines of array that are first name space last name space zip code. All the zip codes start with different numbers. Is there a way to replace the #1 in the indexof below so that it searches for any number character instead?
'open file
inFile = IO.File.OpenText("Names.txt")
'process the loop instruct until end of file
intSubscript = 0
[code].....
How do I use the Indexof Method to search for an Index a number? The number will be different on each line of the file. Each array has a name and a different zip code. I want to tell it to search for the first number in the line. Everything before that index will be first name, last name, and then zip code.
[Code]...
I have an array defined As string and the value stored in site is like "7E", "A1" and so on. But in order to send out this array through serial port. I need to change the the array to As Byte instead of using As String. How can I convert it?
View 8 RepliesI've been working with a sig capture application sample on a windows mobile device, The data is sent via IP to a host as a byte array and is then drawn onto the screen of the host as it appeared on the client. I was able to get this into the form of a bitmap object so I could print it or save to a jpg file. That all works well. The problem now is that I need to store this data in a database and then be able to recall it at a later time and recreate the signature image.
The byte array data is much smaller than the actual image so I would like to store it in that form. My issue is that when I convert this byte array into a string and back again my program can no longer re-create the image. Once I saw the problem I created the code below as a test and added the msgboxes to get an idea what was happened to my data.
[Code]....
i have 2 string arrays and I want to merge them together then put the elements into a third string array ..
for an example :
string1="a","b","c"
string2="d","e","f"
after merging:
string3="a","b","c","d","e","f"
Im working on a program and I get this "Value of type '1-dimensional array of String' cannot be converted to 'String'." heres the code that gets this error:
[Code]...
I don't understand why the line final.join etc pops up with these errors!! Value of type 'String' cannot be converted to '1-dimensional array of String' And Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated This is my code.
[Code]...
I want the Function to accept List(Of String), Array & String and similarly return List(Of String), Array & String respectively. The Function simply adds a string (month) to the input collection. I just want to use it for string, array and list with needing to think of conversions.
[Code]...
As i described below code i am trying to find the the similar class from the ClassArray using the indexof method. How can we invoke name property inside the indexof method
Public Class Form1
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
[Code].....
I have loaded a list of values from a mysql database into a CheckedListBox and want to be able to select them to eb used in a query. The CheckedListBox shows the data as table_name.attribute_name, and when an item is selected I try to break up the two values by using a substring, like this:
Dim strTable As String = clbFields.GetItemText(clbFields.SelectedItem.Substring(0, clbFields.SelectedItem.IndexOf("."))).ToString
Dim strAttribute As String = clbFields.GetItemText(clbFields.SelectedItem).ToString
Whenever I select an item though it comes up with the error "Public member 'IndexOf' on type 'DataRowView' not found." What needs to be changed?