I am using a ToolStripComboBox to list some data. I am populating this combo with some custom objects:
For Each obj As myObject In myObjectList
myToolStripComboBox.Items.Add(obj)
Next
[code].....
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Using conn As New SqlConnection("Database=Clinic_Management_System;Data Source=.SQLExpress;Integrated Security=True;AttachDBFilename=|DataDirectory|Clinic Management System.mdf")
Dim cmdRecord As SqlCommand
[code]....
Is it possible to change the default properties for different objects in the VB6 IDE (I'm sure any version would be similar, but this is the one we are currently using in my programming class in school). For example, is there anyway that automatically, when I create a Label, that it could already have AutoSize set to false, and BorderStyle to Fixed3D, etc.? I feel as if it would work greatly with the amount of time taken to layout my programs.
View 5 RepliesAfter adding any control or object to form from datasource or toolbox, vb postfixes object type name to that control e.g. for Name field NameTextBox, for Component like Data Adapter say AddresesDataAdapter, AddresesBindingSource and so on.Here i want to ask you that may i change this default way to identify the object i.e. may i set prefixes desired for diffrent objects.
View 7 Repliesnoticed the strange behavior of Databinding to ToolstripComboBox.Combobox when it is being added to ToolstripDropdown or Contextmenu. Normally I'm binding SQL data to ToolstripcomboBox.Combobox by following code.[code]Though it works perfect on ToolstripcomboBox(es) on ToolStrip or MenuStrip, failed on ToolStripSpiltButton (or) ToolStripDropdown (or) Contextmenu.
View 4 RepliesI have a form with a toolstripcombobox in a toolstripmenu when I select an item in the combobox, the toolstripmenu stays open. how do I make it close ?
View 7 RepliesI just added a toolstripcombobox on a toolstrip and I tried to use a dataset in order to show data in the toolstripcombobox.
View 1 RepliesEdit: I successefully populated the ToolStripComboBox although i can not or don't know how to get the two column values from the ToolStripComboBox again. Does anyone knows how to do this?
[Code]...
I have a bound ToolStripComboBox. When a user types a value and hits 'Enter', assuming the entered value is an item in the ComboBox, this Sub should fire:
View 8 RepliesI wont to use a ToolStripComboBox from a ContexmenuStrip, to bind with a tabel from the database.
I have a error, when a try this:
"Error1 'DataSource' is not a member of 'System.Windows.Forms.ToolStripComboBox'."
How do i bind a tabel with a ToolStripComboBox?
i am creating a currency converter in VB 2008. I have a two buttons to choose the currency � or $. When one is clicked the String � or $ is entered into my textbox. I need a backspace button. and i used this code.
tb_result.Text = tb_result.Text.Substring(0, tb_result.Text.Length - 1)
tb_result.text = my textbox.
It deletes the last string, but i want it to not delete the Currency($�).
i have a problem in ToolStripComboBox at maximize window don't change size.
How change ? I write
Private Sub Form1_MaximumSizeChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.MaximumSizeChanged
ToolStripComboBox1.Dock = DockStyle.Right
[Code]......
I have a linq query like that:
Elementos = From b In Elementos Where b.Value.IdGrupo = 0 Select b
"Elementos" is a dictionary(of long, MyObject). MyObject has approximately 50 properties.
The problem I have is that I have a new requirement to accept string parameter with a "where" condition. Something like "property1>10 and property2 like 'anystring' or property3<=25". (That means any property could have a condition. I have string and numeric properties.)
I'd like to keep using linq, adding the condition as it comes. I'm aware that it could produce an exception if the condition is misspelled or something, but that's acceptable (by try catchs). I wouldn't want to parse the string to build parameters or anything.
I was wondering how I could go about getting a list of string from a list of objects, while removing duplicates[code]....
View 2 RepliesHowever I do not want to make like 100 blocks of code made of If statements doany idea that this could be done. Like for example
Dim str1 as string = "X" or "O"
If btn1.text = str1 and btn2.text = str1 then
Messagebox.Show("Blah Blah")
[code].....
I have a function that is getting passed a String and a DataRow.The String is a custom formatter. The idea is to do this
String.Format(passed_in_String, DataRow("ColumnINeed"))
The reason this is being done is at this point we have no idea what the column contains.However, if the formatter is "{0:MM/dd/yyyy}" and the DataRow("ColumnINeed") is an integer containing 42, String.Format is returning: MM/dd/yyyy In this situation I need it to throw an exception instead of returning nonsense.Is there anyway to make String.Format throw an exception if the object does not match what the format string is expecting?
I have a simple question about string. Consider following code:
Dim S1 as String = "abc"
What is the encoding for S1? Is that UTF-8 or depending on user windows local setting?
How find an object's type when it is a subclass of another object and I only know the string value of the object's type's name. I created the following classes:
HTML
Public Class word
End Class
Public Class noun
Inherits word
[Code] .....
Then, in my code I create a new properNoun and check to see if it is a properNoun, noun or word:
HTML
Private Sub checkTypes()
Dim pn As New properNoun
MsgBox("Is a properNoun: :" & TypeOf pn Is properNoun) 'TRUE
MsgBox("Is a noun: :" & TypeOf pn Is noun) 'TRUE
[Code] .....
I correctly see that pn is a properNoun, a noun and a word. The problem is, using 'GetType' to check pn against a string value, I can only see that pn is a properNoun, not that its parent classes are noun and word. Is there a way to check pn against the string value "noun" or "word" and get back a positive result, indicating that pn is indeed a noun and a word as well as a properNoun?
I want to convert a string to a Gridview.
So I tried this[code]...
But the strGridView had a blue underline that says string cannot be converted to GridView so I tried this[code]...
But now it is giving the error gvwName cannot be converted to Integer.
Is it really being converted into an integer when I cast it like this?
How should I convert string into a gridview or another objects like checkbox?
I have a question. I have a class of Cars that I need to display in a simpli-ish string if they will be sold or not base on their number.
[Code]...
I'd like to display a simple string like this:Cars to be sold: 1, 3-5, 7-8, 11, which is based of the .Sell value.Is there some kind of heuristic to create this kind of string in .NET or is it just a bunch of for/each and if/then and redimming of arrays?
Is there a way to dynamically create an object using a string as the class name?I've been off VB for several years now, but to solve a problem in another language, I'm forced to develop a wrapper in this one. I have a factory method to dynamically create and return an object of a type based on input from elsewhere. The provided input is meant to be the class name from which to create an object from. Normal syntax means that the entire class has to be explicitly spelled out. To do it this way, there could literally be hundreds of if/then's or cases to handle all the available class/object choices within the referenced libs:
If c_name = "Button" then obj = new System.Windows.Forms.Button
If c_name = "Form" then obj = new System.Windows.Forms.Form
....
[code].....
I am running into a simple issue for which I cannot find an effective solution.
I need to convert 2 D array of objects to 1D String.
Dim saRet(,) As Object = Nothing Dim fileLineArray() As String = Nothing
SaRet = xlrange.Value //it gets values assigned as objects
In a loop....
fileLineArray(i) = Cstr(SaRet(i,0))
I get the error, index was out of bound. ToString isnt able to convert 2d array of objects to 1 D.
I have lots of labels that I need to refer to.
E.g. label1 = listbox1.selecteditem.tostring & "123"
label2 = listbox1.selecteditem.tostring & "123"
I have 20 labels which i need to repeat the same process for. What I found was this code which always gives me the null reference error.
CType(Me.Controls("Label" & i), Label).Text = "what i want here"
I have stated dim i as integer = 1
And later i = i + 1 until it is 20.
I've tried i.tostring and cstr(i) when referring to it but it keeps saying it doesn't exists even though i have labels 1 to 20 named label1, label2 etc. on my Form.
in my datatable I've a String.Byte[] column which contains the array of bytes of an image. So, when the datatable is binded to the datagrid, I can see the picture, if present, and the red cross if is not presente. So I can remove the red cross, by assign a value to the DefaultValue property of the datacolumn. But what default value I've to assign?? I tried with system.dbnull.value but the red cross is still present.
View 8 RepliesWe have a legacy component that has been converted from VB6 to VB.Net.The VB component was called from an ASPX page using Request("param") to pass optional parameters to function calls. That means the value is null/nothing if the parameter is not present.The parameters were then added to an ADODB call of a store procedure using Parameters.Append.When used from VB6 missing, Request("param") values were coerced into empty strings when passed to the VB6 component. This meant that the ADODB call was satisfied (for required parameters).When the code was ported to VB.Net, the null Request("param") values are now passed as null values (VB nothing?) and Parameters.Append skips adding the value if it is nothing. This caused the stored procedure calls to break as a required param was missing.
If we change the component's function parameters to be optional and have paramname as string = "" defaults, will a null/nothing value be converted to an empty string, or is null/nothing treated differently to a parameter being simply missing?
I don't know if I explained this in my title, this is what i want to do. (In VB on a active server page) I have 5 buttons called but1.....but2. Right now I have the following code to make them invisible
but1.Visible=false;
but2.Visible=false;
but3.Visible=false;
but4.Visible=false;
but5.Visible=false,
Is there a way to access the objects by using a string, example
for(i=i;i<6;i++
items("but"+str(i)).visible=false
I am using standard String.Format method. It is using numeric objects.
Console.WriteLine("obj1 = {0} and obj2 = {1}", "obj1", "obj2");
I want to use named indexes.Like this
Console.WriteLine("obj1 = {o1} and obj2 = {o2}",
new { o1 = "obj1", o2 = "obj2"});
How I can use same last code?
Private Declare Function GetPrivateProfileString Lib "kernel32" Alias _
"GetPrivateProfileStringA" (ByVal lpApplicationName As String, _
ByVal lpKeyName As String, _
ByVal lpDefault As String, _
ByVal lpReturnedString As String, _
ByVal nSize As Integer, ByVal lpFileName As String) As Integer
Dim value As String = ""
Dim length As Integer
Dim IniFileName As String
GetPrivateProfileString("Config", "UserName", "None", value, length, IniFileName)
but value contains an empty string I confes to being a VB n00b, less than a week, in fact, but I can't see what's wrong there. The file exists, it contains a section called "Config" which has an entry called "UserName" with a value - but even if not, wouldn't value take the default?
Edit: It's not returning an empty string - it's returning whatever I initialize value to before calling GetPrivateProfileString().
Which is to say that if I Dim value As String = "xxx" then it stil contains "xxx" after the call and not the default value.
Private Declare Function GetPrivateProfileString Lib "kernel32" Alias _
"GetPrivateProfileStringA" (ByVal lpApplicationName As String, _
ByVal lpKeyName As String, _
[code].....
I figure I should use 'Aggregate' but apparently I am getting it wrong First I get a list of my Entity objects Dim employers As List(Of myEntity) = (New XXXX()).getZZZ(userName, userType) Then I figured this would be a way to put all the names in a string Dim names as String = employers.Aggregate(Function(current, [next]) current.Name & " " & [next].Name)
[Code]....