i was wondering is there anyway to stop the error popup messages when i assign a datasource to a DataGridView (and there are errors). i was hoping i could wrap the assigning statement into a Try Catch and handle the errors myself instead of having them popup.
View 2 RepliesI am using a CheckBoxList in a VB.NET web project. The elements are pulled from a DataSource which is populated elsewhere in the system.
The problem is, if someone put in some raw HTML, the CheckBoxList seems to render it rather than assume plain text.
In this screenshot, for example, I entered <a href="http://www.google.com" onmouseover="alert('123');">hover here</a> so now whenever you hover over that CheckBox, an alert window pops up. This seems like a potential for XSS and I would like to disable it altogether.
I have tried googling and searching SO for someway to disable HTML rendering such as this, but haven't found anything relevant, so my apologies if this already has been answered elsewhere.
In a windows form I do have a datagridview. When a user pushes the button, the underlying datasource of the datagridview (a dataview) changes and the new content with new columns is shown. This works fine, only problem is that the header-height differs and that the datagridview does not properly display the smaller headers until I click into the first datarow of the datagridview. Simply using the .refresh()-method of the datagridview after assigning the new datasource does not seem to work.
Here is a little code-snippet showing how I assign a new datasource to the datagridview.
Dim view As DataView = myDataTable.DefaultView
With Me.MyDataGridView
.Columns.Clear()
.AutoSize = True
.DataSource = view
For Each col As DataGridViewColumn In Me.MyDataGridView.Columns
col.ReadOnly = True
Next ...
I am stuck at a task. What I want is, I am creating a table in the database on the fly in the code behind using the below code(in VB).Now my main problem is I want to display this table which is created in step 2 of a wizard, in step 3 using a GRIDVIEW. But as we all know a GridView needs a sqldatasource for values to be displayed, however what I need for achieving this is dynamically assign a datasource to the GridView, but I am not figuring out HOW?
Dim NewTable As String
Dim FullName2 As String = "Dynamic" + "_" + lblCompanyName.Text + "_" + tbCustomerFileName.Text
'Get Row Headers and map to Fields
readerXML.ReadHeaders()
[code].....
I am reading file with text contents on it.sample dictionary.txt contents:
aa
abaca
abroad
apple
Snippet A:
Dim path as String = Server.MapPath("dictionary.txt");
Dim dictionary() as String = {}
Try
[code]....
Basically, I want to make sure that I can handle/prevent this error.Does Snippet B, solves the problem, if not is there other way so that I can prevent this error.BTW, this a web application and I am expecting multiple users.
I'm trying to execute a vbscript programme, on execution I'm getting following errorme in coming out of the problem."Wrong number of arguments or invalid property assignment: wsh"
CODE snippet:
Set xl=createobject("excel.application")
Set wb=xl.workbooks.open(testset)
[code]......
I've try to assign the new parameter to dataset, while i using the following code, i got the error like "Varchar is not a member of Devart.Data.Oracle.OracleType"
View 1 RepliesI have a structure that contains another structure. The inner structure is nullable. Now wht I do is something like the following. I create a new instance of the inner structure, set the member variables and assign the whole structure to the inner structure of the parent. But it is giving an error. The assignment is not successful. If I try to peek into the structure in the watch window, it says "property evaluation failed" for the HasValue and Value properties.
Dim testData As List(Of TestData) = Nothing
Dim testData_List1 As New TestData
With testData_List1.commonTestParam
[Code].....
I am getting an error when helping someone with their code. They are trying to create an array of Items, but gets an error at ItemStruc(counter).ItemName = Contents(0)
I am not sure why. >_>
Structure is as follows:
public structure Item
dim itemName as String
[Code].....
I have a gridview. Its datasource is set as follows.dtTable is a datable in which the values for the table will be retrieved. But when setting dtTable as datasource I get an error "Object reference not set to an instance of an object". What may be the reason for this?
gridview.Datasource = dtTable
gridview.Databind()
I created a master - detail form . I changed the name of one datacolumn in the dataset (not the source) from "alert_name" to "alert_name_new" and i saved all files.I checked the file <dataset>.xsd in the directory and i found the change was made... as expected.When i try to run the application the following error message appears: "Cannot bind to the property or column ALERT_NAME_NEW on the DataSource."
Note: I use vb 2010 express edition
I use vb.net and windows form and sqlserver
I added Data Source(Microsoft SQL Server (SqlClient)) to my project. and now I need to change it to ODBC Data Source .
I'm currently using a combo box in vb.net to select one of many alternatives. From 5 alternatives only 1 works, when i click on any other it gives me the following error:"Cannot bind to the property or column 'xyz' on the DataSource.Parameter name: dataMember" Why is this error caused?
View 14 RepliesHow to block popups
View 1 Repliesi am having a tad of a problem when it comes to popups and new windows. I am currently opening new windows in my webbrowser using the href command and this has been working fine for about 40% of websites but I am running into a few problems as the other 60% of popups are still opening in Internet Explorer windows.I am currently using the
On Error Resume Next
Dim myElement As HtmlElement = CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Document.ActiveElement
Dim target As String = myElement.GetAttribute("href")[code]....
I am having problems loading login forms (asking for username and password to connect to the internet) and any window that uses javascript commands in the href to load the popups.For example:If anyone has encountered such a problem before and knows how to fix it it would be great if you could post up some code or a link to a walk through so I can see how its done.
How to get a nice pop-up of default values for a function? Here's what I mean: I assume it's an enum or object but I'm not sure where to define it or what exactly it would be called.
View 4 RepliesI have made a simple web browser in VB Express 2008 that goes to www.metvuw.co.nz for weather viewing. The problem is when you click on a link to show a picture (it is not just a picture it is a html page) of the weather it opens up in a new window in IE, is it possible to have it just open in the same window (in my browser) and use the back button to go back to the previous page? Ie just like when you click a normal link that doesn't open up a new tab or window.
View 2 RepliesMy help files have a lot of image maps which link to popups, which I implemented as described in the Help for HHW. They work fine in the context of the help system, but if I open the html file in a browser (Firefox or IE), they don't work - nothing happens at all when I click on the hot spots.
View 2 RepliesI'm new on the Development Block, and I would like to know if there is anyone who can help me with popup windows. What I need is a popup window that will apear on the same page as the one on this link: [URL]
View 2 RepliesI am trying to assign a value to serialize to XML via a class (below) but keepgetting the following error: Object reference not set to an instance of an object.
Here is the line that generates the error:
Dim iTranList As New InvestmentTransactionList
With iTranList
.DTSTART = Date.Today.ToString
[Code].....
If my program adds a registry entry, will it cause a UAC popup?
View 3 RepliesHow do i block popups on a tabbed webbrowser? I know how to do it on one thats not tabbed though. This is what i got so far but it shows an error that says exactly "Value of type 'System.Windows.Forms.Control' cannot be converted to 'System.Windows.Forms.WebBrowserDocumentCompletedEventArgs.'"[code]
View 5 RepliesI was wondering, how can I block pop-ups (Ex: Script Errors, advertisements) in a Visual Basic web browser?Also, I was wondering is there a way to add a web browser to every tab I add. What I mean is to get my window problem to work, I had to add a webbrowser to a tab page. How can I make it to where I add a new tab, that it will automatically add a new web browser
View 5 RepliesI have a large project in Vb.net which drives a web browser control around. What's the best, and easiest, way to manage browser pop ups? Note, I am not just looking to cancel or close them. I need to manage them just like the main window.
View 1 RepliesI'm using the WebBrowser control to automate some things in the background of my application but I'm getting this popup. How can I disable these popups in the webbrowser?
View 2 RepliesI am using Visual Basic 2008. However, the Report a Bug function does not work, which in itself is a major bug.While I am typing in the code editor, these annoying popups keep popping up and completely blocking my view of the code. I have no idea what these popups are showing and do not need them. I have not been able to find any way of turning them off. I consider this another major bug.
View 7 RepliesNot an "ad" popup, but a prompt or a "yes/no" question.
View 5 RepliesI have a web application that allows a user to view family members.
When the user clicks on a family member, it displays the member's basic info. There is also a grid displaying that family member's related family members. (e.g. User can click on the Father link. From that popup, they can then click on the Father's Father link, then click on the Father's Father's Grandson link, etc.).
To reduce the number of popups that appear on the screen, I want to prevent the user from continually clicking on family links past three members.
What is the best way to keep track on how many data forms have popped up? Or can this reliably be done with a web application?
Im making a webbrowser prograam! and i want it to automatic press on enter or just on OK if a popup comes up!
How i do this? I also not want it to press my enterkey, since i want to make this work when i got the program minimized too!
Is there any way to do a data base with texboxs im starting to hate userinput popups. And Without using Access DataBase
View 2 Replies