what I am trying to do is, when a ListView loads, for the code to check the entry in column one, and then return a message box if the column contains a specific date.
I am using:
SUB I DONT KNOW THE METHOD TO INSERT THIS INTO. I NEED IT CHECKED WHEN THE LISTVIEW CHANGES
If lvuPreviousJobs.SelectedItems(0).SubItems(2).Text = "31/12/9999" Then
{
MsgBox("TEST")
[code]....
When ListView is not in Virtual mode the following method seems to be the fast method to load a large list into ListView:
Dim items As New List(Of ListViewItem)
Dim alllines as String()=System.IO.File.ReadAllLines("FilePath")
For each line as string in alllines
Dim item As New ListViewItem
item.Text = line
items.Add(item)
Next
ListView1.Items.AddRange(items.ToArray())
I have a data grid view in one windows form named "GridViewForm". When the user search for the text from the search box from another window form named "FindForm", I want to highlight all the matching result in the data grid view. The search type can be exact or partial.For eg.If the user search for the text "stack", then the words "stack" from [Stack, stack-over, stacks, stack exchange] should be highlighted and first cell that match the query should be selected. When the user press next button then another cell that match the search query should be selected.My code for finding the text is like follow for it search only the exact word.
Dim gridRow As Integer = 0
Dim gridColumn As Integer = 0
For Each Row As DataGridViewRow In AccountsDataGridView.Rows
[code]....
Is it possible to collect name of method, line, file etc in which exception occurred for logging purposes? I have heard its possible using System.Diagnostics.StackTrace but not sure how.
View 3 RepliesSimilar in concept to Math.Abs() - I'm looking for a function that when given a positive integer will return the same integer. If given a negative, will return zero.So:
f(3) = 3
f(0) = 0
f(-3) = 0
Yes, this is simple enough to write on my own but I'm wondering if the .NET Math class already has this built in or if the same can be achieved by cleverly chaining a few Math.* calls?
I have a problem about finding a text in ListView....
Ex:
no. Name
1 Andy
2 Endy
3 Rudy
If I input "n" then ListView should have
no. Name
1 Andy
2 Endy
Here is my code
Private Sub findButton_Click(ByVal sender As Object, ByVal e As EventArgs) _
Handles findButton.Click
Dim item1 As ListViewItem = findListView.FindItemWithText(textbox1.text)
If (item1 IsNot Nothing) Then
MessageBox.Show("Calling FindItemWithText passing" & textbox1.text & ": " _
& item1.ToString())
Else
MessageBox.Show("Calling FindItemWithText passing" & textbox1.text & ": null")
End If
End Sub
But I don't see the result...
is there a method check the number of records in data reader? like the count of rows. ?
View 2 RepliesI'm creating a base class for a button that inherits from Control as opposed to ButtonBase.
I'm using reflector to look at ButtonBase to make sure I don't overlook anything important and I'm puzzled with the contents of the WndProc method. There's checks in there for things like button up, click and capture changed, which as far as I can tell are all handled within the relevent 'On' methods of the class.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
Try
[code].....
I have tried this but it does not work:
[Code]...
What is the solution?
I am using ListView Control which CheckBoxes property of the control is set to true..when the from is loaded then all ordernos are loaded into the listview. when i select the orderno then enter contain of the selected orderno to displayed in datagridview control. now i want select 4 order nos and want to display all contain of 4 selected ordernos how find out which orderno is selected through loop and in which even i have to place.
View 1 RepliesWhen the user drags to left, I have to add the item to previous row. When the user drags to right, I have to add the item to nect row.
The below code is not working as expected. each row has 5 items. When the user drags to right in the first row, It is giving the TargetIndex as 5. It is giving the same value for targetindex, when the user drags the item in 2nd row to left end.
Private
Sub PictureList_DragDrop(ByVal
sender As System.Object,
[Code]....
Are there any good free alternatives to DevExpress data grids (WinForms)?I am looking for WinForms Data Grid and Data Editor Controls.
View 1 RepliesI have created a windows form with a crystal reports viewer, a combo box to select a report to view, and a button that I would like to (Print All Reports). The print button in the viewers toolbar will print the report currently being viewed. I want the button in my application to print all the reports without viewing them.
I have following code, but it throws an exception of type 'CrystalDecisions.Shared.CrystalReportsException' occurred in CrystalDecisions.CrystalReports.Engine.dllAdditional information: Load report failed.
[Code]...
I have two forms Form1 and Form 2. I am passing a function with three values from Form1 and want the load event of form2 to trigger this function.. Basically I want to "paint" the values of qseq, midline and hseq on form2
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
When I run this, nothing gets printed on form2 as when load event is triggered thee drawstring method is not called. how can I call drawstring from load method as drawstring takes in arguments and is called from Form1 class.
I need to retrieve my data from a ListView control set up in Details mode with 5 columns.
I tried using this code: MessageBox.Show(ManageList.SelectedItems(0).Text)
And it works, but only for the first selected item (item 0). If I try this:
MessageBox.Show(ManageList.SelectedItems(2).Text)
I get this error: InvalidArgument=Value of '2' is not valid for 'index'. Parameter name: index
I have no clue how I can fix this, any help?
Edit: Sorry, should have said, I'm using Windows.Forms :)
I have a ListView with 3 columns, how do I add specified text to the specified column I want? I've looked at the ..Add function, but it doesn't take the column index.
View 2 RepliesIm trying to fill a listview(tiles) with posters and titles of a DVD collection but only the titles become vissible.
this is my code:
Private Sub fillListView(ByVal listView As System.Windows.Forms.ListView, ByVal col As Collection)
listView.Items.Clear()
myImageList = New ImageList()
For Each item As bsDVD In col
[code]....
Im trying to fill a listview(tiles) with posters and titles of a DVD collection but only the titles become vissible. this is my code:
[Code]...
If I enter a data in a textbox, I want my listview to select the same data entered in the textbox. Example: I have a StudentNumber column in my listview and it has data on it (ex. 123456)
I will enter 123456 in the textbox. The ListView must select 123456?
I have below code in my Form Load event handler but the ListView doesn't show any column headers. I want the column headers to be displayed.
[code]...
I have a VB2005 winforms application that will loads city data from my database table. This is to ensure that the user enters the correct city spelling, in order to receive an accurate quote. Currently, there are about 150K cities that are being loaded to the dropdown listbox on page load. It takes about 30-40 seconds for that page to load. My initial thought was to allow the user to select the state first. Then load the city values. But the user has the option of going back and requesting a quote for a different city / state.
View 2 RepliesMy main form has two panels, left docked and right docked. The right side panel has two child panels with top dock and bottom dock settings. The usercontrol is added to the right side top panel. My usercontrol has a panel and a label. The panel is anchored on all 4 sides, the label is anchored on all except the bottom. At runtime I create this usercontrol and set it to dockstyle=fill and then I add it to my top right panel.
With everything set to "fill" I expect that when I add my usercontrol to the panel it will take on the appropriate width and height and pass that info to the child controls (labels) inside of my usercontrol. My problem is that this stretching of the size does not happen when I create my objects during the Load event on my usercontrol. Even though initializecomponent has ran for the usercontrol the panel inside of it (4 corners anchored) has not taken the x/y values of the available space. As a result my usercontrol shows up about 50% of the width I want.
[Code]...
I am using Visual Studio 2008 and VB.NET. I've got a listview control on my form and I've added columns using the windows forms designer. As you know, if you double-click on the sizer or divider or whatever you want to call it between two columns, the column on the left will autosize (unless you disable that). How can I catch this specific event? The ColumnWidthChanged event and the DoubleClick event are likely candidates, but in the ColumnWidthChanged event, there's no way I can see to determine if it was an autosize. Similarly, there's no simple way to catch what was clicked exactly with the DoubleClick event. how I can catch this specific event type?
View 1 RepliesTo create splash screen before InitializeComponent, the WithEvents statement for the BackgroundWorker component needs to be moved from the Form's Designer.vb file into the constructor as indicated in the first commented lines of the constructor below.
[Code]...
I've decided to learn Visual Basic .Net as this is what some of my colleagues work with, and this will allow me to work with them on projects.I have purchased Microsoft Visual Basic 2010 Step by Step and downloaded the sample files. When I am trying to debug the first sample application (a Windows form), it is telling me that it can't load System.Drawing V4.0.0.0. However, if I create a new Windows Form application (C# or VB.Net) this works fine.
I had a look at the References tab in the project settings and System.Windows.Forms is referenced, but the version referenced is 2.0.0.0. I have removed and re-added this reference and it stays at 2.0.0.0 and I still get the error.Does anybody have any ideas as to what may be going on?
I am working in VB.NET Win forms and what I would like to do is create an object to use its properties.
The trick is that I want to create a reference to an existing class using a string variable that gets passed in to my method.
The project is a web app in ASP/VB.net. The issue is that some pages are mind-boggingly slow. After trying to track down the bottleneck, it was discovered to be the load method when filling a datatable with query results.
We are using an Oracle database and queries are executed in stored procedures. As an example, we have a relatively simple select statement within a procedure which returns 2 columns with 6 rows which was determined to take about 0.015 seconds to execute. However it takes on average 7 seconds to load the OracleDataReader into a datatable - a ridiculous amount of time for such a small record set. After messing around with the query, I found that a simple decode statement appeared to be causing the issue. The decode statement is used similar to as follows[code]...
The iBln variable is simply a number being passed in to act as a boolean variable for determining which column should be between two dates. If I comment this decode statement out and make it simply "column1 BETWEEN iDate1 and iDate2" then the load method takes no time at all as it should, signifying that it is indeed the decode statement causing issues.
I have working code to read an RSS feed that uses:
Dim doc As New XmlDocument
doc.Load("http://...")
Dim channel As XmlElement = doc("rss")("channel")
Dim items As XmlNodeList = channel.GetElementsByTagName("item")
Unfortunately the doc.Load call causes the rest of the program to become unresponsive until it finishes.What's the best way to perform the load asynchronously and have a callback function to process the data?Edit: Here's the code I've tried using WebClient - the Load method is still lagging:
Private Sub checkResults()
'request rss feed
Dim w As New System.Net.WebClient
[code]....
The rssReadCallback method is executed fairly quickly after calling checkResults, but then the UI freezes during the Load method.
I am stumped by being unable to cancel a list view insert operation following a method to validate a string. While the method validates the string and shows a modal popup when the string is not valid, then I want to stop the insert using e.cancel
Imports System.Data
'Imports System.Data.SqlClient
Public Class SecureOrderHCTPScan
[code].....