Reflection - InvokeMember Using GetField - Field Not Found
Mar 10, 2010This is probably a simple one but I can't seem to figure it out. I have a bunch of form items created by the form designer declared as (in frmAquRun.Designer.vb)
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This is probably a simple one but I can't seem to figure it out. I have a bunch of form items created by the form designer declared as (in frmAquRun.Designer.vb)
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.NET I want to clone a value type's fields. How can i set a field value on a value type using reflection (or something else dynamically)?
This works for reference types but not for value types. I understand why but I don't know an alternative.
shared function clone(of t)(original as t) as t
dim cloned as t
'if class then execute parameterless constructor
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How do I set a field value in a VB.NET module using Reflection?
View 2 RepliesI've got a set of static "enumeration" classes that I'm using to hold meaningful variable names to represent meaningless code values I receive on an input file. Here's an example of one.
Public Class ReasonCodeValue
Private Sub New()
End Sub
[code].....
I cannot get the following to work for me: its the section that sets the default for system.data.linq.binary. The database I work with doesn't allow nulls in any field. So I generally run my buffer through this routine to populate defaults and then set the real values independently, (this works when I miss a field). I can set the Linq table field = fakeBinary and it works like a charm. Thus, I don't understand why using reflection can't pull of the same thing.
Ex: Me.CM20500WindowBuffer.Reconcile_Messages = New Byte() {0} works.
Try
Dim fakeBinary As System.Byte() = {0}
For Each fld In nObj.GetType().GetProperties
Select Case fld.PropertyType
Case GetType(Byte)
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I am getting a weird error when trying to run a certain part of my code.
The error is: Field or Property CharSet is Not Found
The Code Is:
<DllImport("user32.dll", CharSet:=CharSet.Auto, SetLastError:=True)> _
Private Shared Function GetClassName(ByVal hWnd As IntPtr, ByVal lpClassName As StringBuilder, ByVal nMaxCount As Integer) As Integer
End Function
I have an Entity Data Model with two entities in it "Roles" and "Users". There is a navigation property from I have a EntityDataSource and a GridView. The EntityDataSource points to the Users entity and has an Include="Roles" parameter.I've added a BoundField in the GridView that points to RoleName, a property of the entity Roles. However, when I execute the code I get the above error.I have used very similar code successfully in another application. Any ideas why this isn't working?
Here is my EntityDataSource:
<asp:EntityDataSource ID="EntityDataSource1" runat="server"
ConnectionString="name=pbu_checklistEntities"
DefaultContainerName="pbu_checklistEntities" EnableDelete="True"
EnableFlattening="False" EnableUpdate="True" EntitySetName="Users" Include="Role">
</asp:EntityDataSource>
And here is the BoundField:
<asp:BoundField DataField="RoleName" HeaderText="Role" SortExpression="RoleName" />
I am having major problems with creating my tables and populating them.The problem for the creating seems to lie when I try to create my table named WeeklyUnitStaffRota. I get the run time error 2147467259(80004005) No unique index found for the referenced field of the primary table. This has only started happening as I have been tinkering with my tables to get them to populate properly.I seem to have a problem when I have two columns with the same info but relating to a different college ie two MSC being run at 2 different colleges.[code]...
View 1 Repliesim using webbrowser control and html code in my project my question is how to see other invokemember events like ("Click") is there any complete list of events,
View 2 RepliesI have this HTML [code]...
This code is for a lable (I think) in the Web page of WebBrowser. This lable can be clicked with the mouse and then a green text is being shown.
I tried to use this code to click on the black lable and show the green text[code]...
I am trying to WebBrowser1 InvokeMember "Click" on the OK button, but I have no idea how to work it with classes, and 2 of them at that. So obviously Im going to have to do some loop and get the second one.
View 1 RepliesI am using the HtmlElement's InvokeMember function and was wondering if there is a nicely formatted list of all the strings that can be passed into that function.So far I know about these strings that can be passed into InvokeMember:Click, Focus provide a link to a list of all strings that can be passed into the InvokeMember function or write them down?
View 1 RepliesHTML
<div class="t_block"><a name="pass2889" href="download.php?id=2889" style="color:black"><b></b></a> | <b>:</b>
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This is the button code in the html for a button on a webpage that displays more results. I tried to use the browser.invokemember but Im not getting any results back. Here is my
For Each element As HtmlElement In wb.Document.GetElementsByTagName("id")
If element.GetAttribute("id") = "more" Then
element.InvokeMember("click")
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As the subject says, I was wondering what's the difference between the InvokeMember("click") and RaiseEvent("click"). Also I see around example of InvokeMember("onclick"). What's the difference with just "click"?
View 1 RepliesWe have an VB.net application that is being moved from one box to another. It runs great on the old box. The new box is configured the same as the old one but is on newer hardware. When I run the application on the new server it complains that the adobe toolkit that we use can not be found.
View 2 Repliesi've tried various methods... such as;
WebBrowser1.Document.GetElementById("id").InvokeMember("submit")
WebBrowser1.Document.Forms(0).GetElementsByTagName("INPUT").Item("id").InvokeMember("click")
but none of them have worked... (I aso changed the form name to its correct name instead of 0, but still no luck). Here is the html button I'm trying to click.
<div class ="user" >
<input class ="button " type ="image " src ="/images/userbutton.gif " />
I would like to invoke a click on a link from a link that is generated by an HTML query. I am attempting to program an application that queries a website and am getting hung up where I download the .csv that is loaded by the website.[url]...
cansim9170974256855749928 from the url is not static and I don't know how to work around this. I thought that this link would be helpful and should be except there is no link ID to reference. Is there a way to enable a clicking event on a random csv link? I have mashed together some failing attempts at this off and on for some time now and am now in your hands.
I have seen people use the code
Do Until WebBrowser1.IsBusy = False
Application.DoEvents()
Loop
or use the WebBrowserReadyState however, this doesnt seem to work after I invoke a member For example, I use "invokemember("click")" and then after that, use the WebBrowser.IsBusy or ReadyState, and do another InvokeMember, it doesnt work. It seems after I invoke a button and it navigates, it doesnt seem to matter?
Currently I am using this code to check for Firefox on a 32 bit machine
Code:
Dim Firefox32 As String
Firefox32 = My.Computer.Registry.GetValue _
("HKEY_LOCAL_MACHINESOFTWAREMozillaMozilla Firefox 5.0in", "PathToExe", Nothing)
MsgBox("The value is " & Firefox32)
If the value is found then the above message is fine, but if the entry is not found I want it to display a message like: "Firefox could not be found" instead of "The value is: " What code would make this appear?
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As the title says i am trying to click this button... Pic (The save one) on this webpage...[URL]
I have been trying various permutatuons of this
Dim j As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName("BUTTON")
For Each elem As HtmlElement In i
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I am building a data based application using VB 2008 an SQL Express. I need to create textboxes on my form using code, (With & End With) method. I need a simple code string that will allow the app to check if the field to wich the textbox wil be databound is Nul, If so the textbox will not be created.
View 8 RepliesThere are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
View 1 RepliesI am trying to edit a dbf table. I would like to be able to rename field headings and change the field type, ie string or dbl, and the size of the field. is this possible to do with vb.net. I have connected to the dbf file but after that am lost on what to do.
View 3 Repliesmy problem:
HTML source
...<input type="submit" value="buy" name="Submit"/>...
I can`t use WebBrowser1.Document.GetElementById("Submit").InvokeMember("click") because in this page is more than one form with name="Submit".
Having problem with mouse click, this code i am testing is through vb.net 2008 express edition, i am just wrote a program my form has one web browser and button when i click the command button it click the upload-video file for uploading the video [Code] also i had no idea how to automate the video inputs(file name)into the dialog box and click save button. what i am trying to do this click upload and then input video file name do the other settings like this and the finalize the process.
View 1 RepliesI need to set a field that i have dumped into a dictionary to a value that is always a string, (well, it came from an xmlElement, so the .value is a string)
Function setMembers(ByRef ClssObj As Object, ByRef nLinkObj as Object, ByRef xml As XElement) as integer
Dim fields As New Dictionary(Of String, FieldInfo)
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I'm wondering if there's a way to use Reflection to inspect properties of a COM object? GetType() doesn't want to return the actual type.
View 3 RepliesI have been trying to use reflection to get at all variables I have in classes. I have a bunch of classes and they all use private fields, with public properties to access these private variables.I have used the method Type.getFields() to get to all the public fields, but it doesnt return anything. It seems to completely ignore properties. If I add some test public variables as normal, it picks these up, however I was hoping to keep using the public properties in these classes.
Is there anyway to force the Type.getFields() to pick up on public properties? I see it has some binding flags, and one for getProperty, however it doesnt seem to work.
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