I have 2 dropdownlists, one is State and the second is City. I am trying to create it so, when a user clicks the State, the second dropdownlist is populated with City names from a datatable.[code]
View 3 RepliesTrying to select a dropdownlist item based on a value
Dim basedate As Date
basedate = "12/30/1899"
Label26.Text = basedate.AddDays(y)
ddate.SelectedIndex = ddate.Items.IndexOf(ddate.Items.FindByValue(Label26.Text))
I have 2 dynamically created ddls in which the second ddl populates based on the first ddl and the values of both come from a database. These ddls are inserted into a table that is dynamically generated based on some event. My problem is that everytime I select a value in the first ddl, the page load event is called and I lose the table. Is there a way to NOT call the page load on a selection? Or is there a way to generate the table with the values of ddls as soon as the page loads. I tried to fix this problem
View 4 RepliesI have a page that contains dynamically generated Dropdown List controls and I want thant the dynamic dropdown list perform an AutoPostback to fill some other field using the value selected.[code]Control is correctly filled and rendered on ASP page but, after selecting a value, the page is reloaded (AutoPostBack is called) but the control is not diplayed and the sub is not called. I put a breakpoint into the ChangeValue sub but anything happens.I read on some post that handler for the first DropDownList is not necessary but, how is it possible to tell DropDownList to call my sub after changevalue?
View 1 RepliesI have two dropdownlists, the first is State & the second is City. I have the State ddl populated, but I would like to populate the City ddl via the selection in the State ddl. I am using autoPostBack, so it goes through the motion of updating but nothing loads. I am sure it is in the code behind or in the databind.
View 1 RepliesI have a bit of a tricky scenario. It consists of some partial problems for which I have individually found solutions, but I couldn't find anything that makes it all work together smoothly.
-Upon selecting an item in a datagrid, a new page loads with the details regarding that entity.
-The entity represents a product that can have any amount of variants (such as a t-shirt's color or size)
-I dynamically add dropdownlists to this detail-page that represent these variants (there can be any amount of variants, and each variant can have any amount of different values, each value or combination or values from different variants representing a unique product entity)
-Upon selecting a different variant in a dropdown, a delegate is called that will change the session variable to the productId associated with the selected variant and a postback is fired that will reload the page with new data based on this productId
The problem: the postback is fired BEFORE the dropdownlist's (OnSelectedIndexChanged) delegate is called. Since this delegate defines the productId in the session, the new to-be-used productId isn't known at the time of postback.
Result: loading the correct data in the page is always delayed by one postback. Each time I change the selected index of any of the dropdowns, the page is loaded with data based on the session variable that the PREVIOUS OnSelectedIndexChanged delegate of the dropdown set.
I have a LoadData() method that sets the values of all textboxes, fields, labels etc. based on the productId stored in the current session. This method is called on Page_Load.
Private Property CurrentProduct As Product
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
LoadData()
[Code] .....
It seems that I haven't been completely clear on what does and doesn't apply to this scenario regarding Page Lifecycle.
1) My dropdownlists are added dynamically, which works fine on the first page_load.
2) The content of the dropdownlists is defined by what entity's details i'm loading on the page.
3) What entity's details I'm loading on the page is at first(not-postback) defined by the product I selected in a gridview in the previous page.
4) At postback, this entity is based on a sessionvariable containing the id of the entity.
5) This session variable is defined by what item in the dropdownlist I select.
6) This dropdownlist dissapears after postback since it's not defined on the page, but dynamically. So is the event.
So my guess would go towards some clientside script that stored the selected value before postback, but then I would be clueless on how to get that variable to the server since the logic that retrieves the entity is in the business logic layer which is far away from this page..
I am making my site compatible to all browsers.For that on one page i am selecting the name from dropdownlist and on click of VIEW(button),i want to open a new window .i also want to send the value and text of ddl on new window. all of this i want to do on onClientClick or onClick of button...
for getting the value i hv tried this code:-
input name="button1" type="button" id="btnview" style="cursor:hand" class="Buttons" title="View" value="View" onclick="alert(document.all('<%=ddlScheme.ClientID%>').value);"
[Code]....
In a nutshell, I am selecting values from a checked box column in a grid view. After checking the boxes I have a function that concatenates each customer number into a string called @CusList to use a parameter for a stored procedure Public Function SelectCusList()
Dim CusShow As String
Dim CusStr As String
Dim CusList As String
CusStr = ""
[Code]...
I am using a function that is provided by the maker of an IO device that I'm using and the call for this device turns on and off the 16 ports on the IO device by sending the value true or false to the board. The call is as follows:
[Code]...
here's the snippet of my code that im trying to solve since last week...
icePayment.aspx If (Left(Request.Form("return_url"), 7) <> "http://") Then
errorInput = errorInput & "Invalid return URL path! <BR>" errorExist = True
Response.Redirect("InvalidUrlError.aspx")
Else
[Code]...
I have a variable that gets a value in a js function. I need to get its value as a double into a vb.net variable. I have tried putting the variable into a label then grabbing it from the label in vb.net as shown in the code below:
[Code]...
Dim SecondName As String = SecondNameTxtBox.text()Is the above statement a correct one?Here I want to assign the value of the text box into tat "SecondName".If it's wrong, please tell me the correct way to write this statement.
View 1 Replieshow to pass value from database to a variable.
This is my query:
Dim it As String = "Mouse"
Dim itNo As String
SELECT * FROM tblITEquipmentName WHERE equipmentName LIKE '" & it & "%'"
I would like to get the ItEquipmentNo and pass it to variable itNo
i have 2 forms -> form 1 and form 2
in form 1 -> 1 button
in form 2 -> 1 textbox and 1 button
when I click button in form 1, it will show the form 2..how can i pass the variable (data from textbox in form 2) into a variable in form 1 after clicking the button in form 2 ?
this is the linkbutton
<asp:LinkButton runat="server" ID="linkId" OnClick="doSomething(10)">ID
</asp:LinkButton>
and this is my sub
[code].....
I know in VBA you could pass an entire form as a varible. Since using global variables are not advised in .net 2008, is there anyway to do this ?
View 9 RepliesNot sure how to do this sub that passes a variable that is used in a Dim.
fill_in_field("main_form.WebBrowser1")
Sub fill_in_field(ByRef WebBrowser As String)
Dim ElementCollection1 As HtmlElementCollection = WebBrowser.Document.GetElementsByTagName("input")
End Sub
Dim ElementCollection1 As HtmlElementCollection = WebBrowser & "Document.GetElementsByTagName("input")"
This is what I would like.
Dim ElementCollection1 As HtmlElementCollection = main_form.WebBrowser1.Document.GetElementsByTagName("input")
is there a way i can do like this in vb.net
[Code]...
what i want is that idx keeps incrementing after each line, without incrementing it on a seperate line.
I want to know if it's possible to retrieve the variables name from when it was passed into a certain function. For example, if I call parseId(myId) to a function with the signature parseId(id), i can obviously retrieve the value of 'id'. However, is there any way I can retrieve 'myId' as a string (without passing it as another value)? Specifically in vb.net, but I'm interested in how it would work in any given language.
View 3 RepliesI have a public variable that I declared in form1 of an application. I am trying to call that variable in form2 and then pass that variable in a sql query. If I declare:
Public Class Form1
Public payPeriodStartDate, payPeriodEndDate As Date
How then to I declare that variable in form2 and how to I pass it to my sql query.
Here is the code I have for form1: [Code]
and when I debug this form, no data will appear. I'm sure that it's something wrong with how I'm either calling the variable in form2 or in the query. Can anyone offer any assistance on this?
passing a variable to a sub procedure by reference. Not sure I understand how it works. Here is the code.
Private Sub bntcompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bntcompute.Click
Dim x, y As Double
getnumbers(x, y)
displaysum(x, y)
[code]....
Is the newly modified variable actually being Passed back? and If so where in the statement is it passed back. is it being passed back to the call getnumbers or is it passed back to the statement displaysum?
I'm using MVC2 with jquery.I'm trying to open a partial view in a jquery Dialog container, passing an itemID of an object to be deleted.What I'm doing to accomplish this is passing in an action that renders a view to jquery, which I can get to work without variables.f I try to pass in the ID of the object to be deleted, the action doesn't even trigger.
Here's my jquery code:
$(function () {
var itemToDelete
[code].....
Doing a small project where I would like to be able to print the results of certain calculations. I want to open a new form where the data can be neatly presented and printed. I just can't seem to make the data get passed along to the new form when I open it..
[Code]...
Do you just need to format the date? Such as msgbox(New Date(2010, 1, 1).ToString("yyyy-MM"))
Or do you need a hashtable:
[Code]...
I have a useform set up to have a user input value, and I would like to pass that value to a module. I have made the variable public along with the subroutine that I am trying to use the variable in. I have a message box display the value of the variable in the subroutine and the value is 0, even though I have inputted a value in the userform.
[YearForm]
Option Explicit
Public Sub UserForm_Click()
Me.intYear.Integer = Year
Module1.OpenFile Year
[Code] .....
I have a form with a list box. I'm calling it as a dialog. I can get the result of which button was pressed (OK/Cancel) but how do I get the value chosen from the list?
Dim frmCreateCSVFile As New CreateCSVFile
frmCreateCSVFile.dtpFirstEndDate.Value = dtpFirstEndDate.Value
frmCreateCSVFile.dtpLastEndDate.Value = dtpLastEndDate.Value
[code]......
I'm trying to pass value from form1 to form2, while both form is open.
Using New (Dim frm as new form2) only works when the form2 is not loaded yet. what if both forms already open?
PS: I don't want to use module since there will be a lot variable to pass and i don't want to maintain such large collection of variable in module.
I use VB .NET 2002 (academic version) I have created an MS Access database to be populated with vaules extracted from dBase files. Some numerical values can be null - ie where no data was recorded in the dBase file. Relevant field properties in MS Access mdb table are set to "Not Required" as follows - dt0 is the name in code of the Access table "AllData":
With dt0.Columns
.Append("Date", DataTypeEnum.adDate)
colTest.Name = "Ch1Deg"
[CODE]...
Using an INSERT INTO command I can send a null value to the field:
SQLMdb = "INSERT INTO [AllData]" " ([Date],[Ch1Deg])" & _
" VALUES ('" & dDate1 & "',null)
My problem is how to pass a variable which sometimes takes the value System.DBNull.
If I use SQLMdb = "INSERT INTO [AllData]" " ([Date],[Ch1Deg])" & _
" VALUES ('" & dDate1 & "','" & dDeg & "')
Then when dDeg is numeric then there is no problem and the table is populated. When data is missing and dDeg takes the value System.DBNull then it's a no go! The error message is "Data type mismatch in criteria expression."
Is there a way round this with VB .NET 2002 or do I need to upgrade to a later version which has nullable data types, eg nullable integers and doubles etc?
Is there a way to call or pass a variable to another sub? I'm trying to reterive a variable (or even a field name) in somethign like this:
Private Sub PrintPageHandler(ByVal sender As Object, ByVal args As Printing.PrintPageEventArgs)
args.Graphics.DrawString(RS("field1"), New Font("arial", 8), Brushes.Black, 5, 5)
[Code].....
I am trying to create a number of objects depending on the width of a row of an array, is there a way I can change the name of the variable being Dim 'd as I don't know how wide the array will be.
I have been trying something along the lines of:
pseudocode
For x as integer = 0 to UBound(MyArray,2)
Dim Object & CStr(x) As Object Type
Next