I'm trying to update a DataGridView via a Delegate. This is part of a simple application but the initial query takes 4-5 seconds to generate. I want to FillSchema to build the DataGridView so the application launches quickly and then updates the data.[code]...
View 1 Repliesfrom the documentation we have this: Multicast Delegate: Represents a multicast delegate; that is, a delegate that can have more than one element in its invocation list.
so am i right to say that Multicast delegate is no different from a normal delegate other than the fact that it has arguments. so System.Action is a 'normal' delegate whereas System.Action(T)(Byval obj as T) is a multicast delegate?
I've created a Delegate that I intend to call Async.
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Code:
Public Class SendPings
Shared Sub New()
AddHandler Post.Saved, AddressOf Post_Saved[code].....
I get a error" Method 'Private Shared Sub Ping(item As BlogEngine.Core.IPublishable, itemUrl As System.Uri)' does not have a signature compatible with delegate 'Delegate Sub WaitCallback(state As Object)'.
I am trying to write a VB.NET alternative to a C# anonymous function.I wish to call Threading.SynchronizationContext.Current.Send which expects a delegate of type Threading.SendOrPostCallback to be passed to it. The background is here, but because I wish to both pass in a string to MessageBox.Show and also capture the DialogResult I need to define another delegate within. I am struggling with the VB.NET syntax, both from the traditional delegate style, and lambda functions.My go at the traditional syntax is below, but I have gut feeling it should be much simpler than this:
Private Sub CollectMesssageBoxResultFromUserAsDelegate(ByVal messageToShow As String, ByRef wasCanceled As Boolean)
wasCanceled = False
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how to load the datagridview in vb.net code
View 2 RepliesIn order to save the DataGridView to XML i use this [code]...
View 1 Repliesi have a datagridcomboxcolumn, i got the values but now i want to do the same like a 'normal' combobox, i want to load one value from Medicines Table in the third datagridview column (datagridtextboxcolumn), in my datagridcombox the display member is the Medicine's name and the value member is the Medicine id. i tryed to use a dictionary but i don't know in wich method i will reference to it.here is my code to load the datagridcombox
vb
Private Sub frmAddCompra_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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DataGridView i will like for DataGridView to Save when i close my application and i will also like to Load when i open my application.
View 5 RepliesI am not sure why my dataset is not being posted into datagridview
Sub to load the form and datagrid view
Private Sub btnMueME_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnMueME.Click
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My code is working fine I just need a way to reset the DataAdapter1 into 0 (like reset) So if the user hit the button search 2 times to shows up only 1 time the elements of database "product".. If i used the code below and hit 2 times the button the DataGridView show 10 product for examplat the first time and +10 for the second, a total of 20 products, even if I search then edit a product and search again it's fixed the previous table and prints again 2 times the table....
DataAdapter1.SelectCommand = Sql2 ''database load
DataAdapter1.Fill(ds2, "products") ''dataset
DataGridView1.DataSource = ds2
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I have a datagridview and need to do some formatting to it. On load the row 0 column 0 cell is highlighted. I need users to click on datagridview to select a value. The issue is with the initial load highlight it looks like the first row is already selected when in fact it is now. How can this highlight be disabled? Each row of has 7 cell, the user is able to select any of the cell of a row and the corresponding row ID is selected. The issue is that only that one cell is highlighted.
I would like the entire row highlighted regardless of what cell in that row is clicked on. One of the columns is a status value. I would like to color the text based on the value. For example if the Status is opened I want the text to be red, if the status is closed the text color should be default.
Instread of using SQL Connection is there a way to save and load the rows from an .INI file and if it can, mind showing me how?
View 1 RepliesI have a problem with sorting in datagridview. I load an xml file in a datagridview and I sort the collums for check. when I try to sort it according to it's number the sorting goes like this:
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i have code to load data from database to DataGridView.
VB.NET
Imports System.DataImports System.Data.OleDb Public Class Form1 Dim dt As New DataTable Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Me.WindowState = FormWindowState.Maximized End Sub Sub setData()
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I am loading data from query into a dataadapter and then into a dataset.the datadridview datasource is the set to the dataset.but it takes too long to load the data into the datagridview.
View 2 RepliesI create more then 10 columns in Access 2010 and I have a lot of rows. I write code already to load data to my datagridview, but I want to know to how to load data with progressbar untill finish. *If loading data does not finish the progressbar does not finish,too.
View 8 RepliesHow can i load datagrid view combo using code? and how can i make it just like a ordinary combox, so that i can text inside of it?
View 1 RepliesI have a problem in populating datagridview using storedprocedure i tried but i cant get it.[code]...
View 2 RepliesI have a datagridview loaded with data.what i have tried to do is make it so if a certain cell in a row is double clicked then textbox1.text = field 3 of that row .text
View 3 RepliesI have a datagridview (Unbound), wich calculate several numbers, and I use this following code to save 5 of the columns to a XML file. My problem is that I would like to load this file back to my datagridview, and only to the same columns, without changing the rest of the datagridview.
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How can i save and load items in my datagridview ?
View 1 RepliesI'm current using this to populate a listbox with some data:[code]I want to do the same but using a datagridview. It's possible to use the structure I already have to populate a datagridview? I searched but found nothing about that.
View 5 RepliesI have a dialog that containers a DataGridView, this dialog is opened from a parent Form. I would like the DataGridView to have focus as soon as the form is opened, so on pressing the down key would enable you to scroll down through the rows straight away. I have tried setting the tab index so that the DataGridView is the first selected item in the form. I have also tried calling the DataGridView.Focus() method in both the dialog constructor and the Form_Load event. I have also tried setting the
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I have a access table column ("d") and rows with value Datetime. How can I ..... when form load make the datetime now ..visible. What is the code for making the rows with datetime value now start with index 0.
View 4 RepliesI'm working on a simple "sports management" game just to test out whether I could make an actual one some time in the future, but for the life of me I haven't been able to figure out how to save the contents of the datagridview. I want it to be saved in a format that doesn't require the user to have Access or any other program, so that the only thing users need are the .exe and the database file. Another question about the datagridview: How do I access the content on specific rows and columns of the datagridview? If I want TextBox1.Text to be whatever is written on Row 4, Column 2, how do I access that information?
View 1 RepliesI load a text file in a datagridview. The problem is that I want to make some validations to it after I import it.
Eg.
AA / Code / Value
1 1111111 12
2 222222 22
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I'm using Excel as a database backend to load into a datagridview.
This is how I connect and bind to the dgv:
vb.net Dim sFileName = filelocation & "checks.xls"
Dim connectionStringTemplate As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml;HDR=Yes;IMEX=1"""
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It connects and populates fine. I have a button for the user to "refresh" the datagridview. I cannot get it to correctly refill the dgv. I have tried setting the bindsource.datasource to Nothing along with the datagridview datasource, but I get an error that brings up the Visual Studio debugger with no real error message...
I was wondering if there is any way to load data from excel sheet into a datagridview in VB2008 dynamically. I have looked at few data connection codes but all of them involve the excel sheet and thw workbook name. Is there anyway that I enter the excel sheet name in a inputbox and the data from excel loads into datagridview without hardcoding the sheet name. I know data can be imported using the below code, here the programmer has to mention the excel workbook name, path and sheet name. [code]I am developing a program to perform some calculations and my data is in a number of excel workbooks and worksheets. I need to be able to bring the data from these excel sheets into the datagridview to perform calculations. So I was thinking if I could mention the excel sheet name in the GUI and then accordingly the data from that particular sheet would be loaded into the datagridview to perform calculations.
View 5 RepliesI have a password protected database (.mdb) which has 2 different tables, and a DataGridView What I want to do is:
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you would think that this would be simple, but with some sample code i found i could only get it to load and not save, or it would be written for a datagrid and not a datagridview.