I'm trying to set a text box equal to a value in dataGridView and I keep getting an error index out of range.The dataGridView is data bound to a stored procedure. When I move the text box setting to initiate after the form loads and a button is pressed it works fine; however, when it tries to automatically load after the fill command it errors out. The following code is what I have:
[Code]...
In VB2010 WPF, i have a textblock which, when the window loads, i need the text inside the textblock to be the same as the text in an outside .txt file. How can i do this?
View 1 RepliesIn the following LINQ query, i would like when the Loc=Locale.Gr all the records with GrID=100 returned and when the Loc is anything else all the other records with GrID <> 100 returned.How can i achieve this one? I tried something like the following, but it is totally wrong.
PrivateSub Test(Byval Loc as Locale)
Private Const GrID as integer = 100
Dim Query = From c In Mob Where c.CountryID = IIf(Loc = Locale.Gr, GrID, <> GrID) select c
End Sub
[Code]...
How can i set Textbox1.text equal to the conents of file.txt?
View 3 RepliesIm trying to use this code to check if files in a directory equal to the text typed in these textboxes. The files end with extension ".ldb". The code doesnt seem to work
View 11 RepliesI need to app to go through all the elements <div class="address"> and check the length of the text inside it. if its less than or equal to 2, then it needs to skip the following line and check the next <div class="address">Here is my code:
Dim content As String = ""
Dim web As New HtmlAgilityPack.HtmlWeb
Dim doc As New HtmlAgilityPack.HtmlDocument()
doc.Load(WebBrowser1.DocumentStream)
'this is where I need to check if text inside divclass="address" is <= 2
Dim hnc As HtmlAgilityPack.HtmlNodeCollection = doc.DocumentNode.SelectNodes("//div[@class='address']/preceding-sibling::h3[@class='listingTitleLine']")
I want retrieve from database data to a text box that equal to selected from a combo box. ex:- i'm selecting a item_code from item code combo box after item name should come to the item name text box.how can i writ that.
View 2 RepliesI have an xml document on the internet right. Lets say it contains:
<tag>goose</tag>
What I want to do, is when the user clicks a button in my vb form it looks for the "tag" tag and finds the text inside the tags which is goose. Then it sets a label to equal goose, or whats in those tags.
How does one check to see if the system time is equal or not equal to a specific time? So, say I want to perform an action if your system time is between 6pm and 6am. Or something similar?
View 1 RepliesI have a form that I am adding a set of buttons to. I am adding an event to those buttons. I need this event to function slightly to determine what button was pressed.
I need the button to simply set a string variable equal to the clicked buttons text so I can determine what button was pressed.
How can this be accomplished?
''Adding the buttons''
For Each dr In dtMenus
Dim strMenuName As String
strMenuName = dr.Item("strMenuName").ToString
[CODE]...
is it possible in design mode to set the textbox text property to the text property of a textbox in a different form in vb.net?
View 1 RepliesHow would i get a certain text inside a textbox to equal that text space to space or null to space?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Textbox1.Text.StartsWith(Textbox2.Text + " ") And Not String.IsNullOrEmpty(Textbox2.Text) Then
Textbox1.Text = Textbox1.Text.Remove(0, Textbox2.TextLength)
Textbox3.AppendText("a")
End If
Btw: after i finish this step my project will be finished!
I have a DataGridView (dgv) on a Windows form (VB.NET) which is bound to a datatable. One of the bound columns is a an ID (Foreign Key) to another datatable. All I want to do is Hide the ID column and populate an unbound column with the Name (ParmName) for the user. I searched the foreign value in the datatable and retrieved the information. I set the Value of the cell in the Datarow. All works well, but does not display. The cell accepts the value...I can even Debug.Print the values to the console. They are there just nothing displaying in DataGridView. Nothing odd about DataGridView. Should be straight forward...
My Code
,
Dim dtParm As DataTable = MyDataSet.tblParameter
Dim dgv As DataGridView = Me.dgvResultNum_DataGrid
[code]....
A datagridview is sorting numerical values (when clicking the datagridview column header text) in the wrong order based on the initial digit:
[Code]....
On winxp sci. calculator when you press 9x9=81 you get 729 when you press = again.How can i add this feature to this code i already have.
View 2 RepliesYesterday I asked why a adding 10 times 0.10 to a double is not equal to int 1;in VB Why (1 = 1) is False.I got an excellent answer. The overview is because:Floating point types and integer types cannot be compared directly, as their binary representations are different.The result of adding 0.1 ten times as a floating point type may well be a value that is close to 1, but not exactly.I can see the reason why now. However, if I do something like:[code]In this case I really obtain equality between double 1.0 and int 1. I thought then that double were only approximations so I would expect d to be somehow a value close to 1 as in the original first question. Why is not a good idea to compare directly different data types (in this case double - integer) and why I this time I obtain equality ??
View 2 RepliesI have a Date variable startdt and a String variable hdnsdate. Suppose if startdt has the value in the form 3/1/2012 and hdnsdate has the value in the form 03/01/2012. Than how can i compare that these two dates are equal in vb.net. In if condition of my program i want to do this check. In case the two dates match move out of if loop otherwise go into the if loop. E.g A sample in C# what exactly i want.
[Code]....
I'm a little foggy on System.Type versus an actual class type (like Object or XmlDocument) in .NET... will this code correctly determine if the type of a particular object is equal to a class I specify?
// Given "myObject" (unknown type), and some class type (let's say "MyClass")...
If myObject.GetType.Equals(MyClass)
If TypeOf(myObject) Is MyClass[code].....
Which one is correct? Bonus points if you can provide some information on what a class identifier is versus what a System.Type is. :)
Note: The language doesn't matter here, VB.NET or C# is fine, the code above is pseudocode.
I would like to compare dates (not times) for 2 datetime variables. I get one of the dates from database as follows and comapre it with yesterday.How can I do it?
[Code]...
Why does the first if statement evaluate to true? I know if I use "is" instead of "=" then it won't evaluate to true. If I replace String.Empty with "Foo" it doesn't evaluate to true. Both String.Empty and "Foo" have the same type of String, so why does one evaluate to true and the other doesn't?
//this evaluates to true
If Nothing = String.Empty Then
[CODE]...
I want to test if an image in a picturebox is the same to another image in a picturebox?Also, i get my images from a listBox.I need to use i as a conditional in an if statement.
If (picBox2.Image = picBox1.Image) Then
' code ...
EndIf
[code].....
I would like to set stringa and stringb to be equal and then clear stringa like so:
Dim stringa as String = "abc"
Dim stringb as String
stringb = stringa
[Code]....
However this code sets up a link between the 2 variables, so when I clear stringa stringb is also cleared.
I am trying to write an IF statement that checks to see if a certain String variable is not equal to a certain value. What is the best way to do this?
Method #1
IF NOT(Nametxt.Equals("Fred")) Then
x = 3
[code].....
How do I declare/define a ResourceManager in the following code so it doesn't equal Nothing when it reaches rm.GetString("Magnitude") in the following code? My.Settings.. is returning a valid string.
Imports Gigasoft.ProEssentials.Enums
Imports System.Resources
Imports System.Configuration
[code]....
I have a datagridview which is populated with information from a database. I would like it so that when I click on one of the items in the table, the information appears in the text box, or other suitable tool.
The VB output is an EPG (electronic program guide), that has a list of programs and the channels/time etc. So when you click on the program such as 'The News,' the data from the database such as 'Description' will appear in the textbox.
This makes no since to me I have a textbox that the user will put in information that I need to cut off so I wrote this code
txtMatID.Text = Trim(Mid(txtMatID.Text, 1, (InStr(txtMatID.Text,
"-") - 1)))
The user will imput a number value then a - then some words after that. I just want the number value. But when I try to debug the app it breaks on this line of code with this error. Argument 'Length' must be greater or equal to zero.
In my decryption statement I am getting
Argument 'Length' must be greater or equal to zero. is this statement wrong
DecodedStr = Mid(DecodedStr, 1, InStr(DecodedStr, Right(DecodedStr, 4)) - 1)
I disabled an exception because it was bugging me i couldnt find an intermittent error. My program reads textmessages from a phone, however a problem sometimes arises, and I am slowly pinpointing the areas of the code that cause issues. I have found however that it is sometimes here:
'Get a string of certain length
Shared Function GetString(ByRef PDUCode As String, ByVal Length As Integer) As String
[Code]....
check to see if length is zero AND thereofre try again in a moment, (because it usually works second time for some reason). I can think how to get around the exception
How can i check a file's md5 if it's equal to one in a listbox?[code]...
View 3 RepliesI want to check If a variable is equal to some values or not, for example:
if a = 1 or a = 5 or a = 7 or a = 10
is it possible to do it like sql:
if a in (1,5,7,10)