I created a reporting utility for my users to view, send (via email), export SSRS reports. I have set up date parameter boxes with calendar drop down and they are able to send via email a URL link that would either display the report via ReportViewer or send a link that would let then view the report in Excel or PDF. This is working just fine. Now I just added a button for adding new email addresses and a new windows form with a textbox for entering the email address and a command button for Save Email Address. I get an error msg Quote: Objects added to a BindingSource's list must all be of the same type.[code]
As a preface, I am brand new to using SQL Server 2005; I know how to use the SELECT, UPDATE, DELETE, and INSERT commands and that's about it. I am also using Express Edition on my local PC (E8400 processor, 8GB of DDR2-800, 2 x 640GB SATA-II HDD in RAID 1)
I have a table that I set up with 8 columns, all are NVARCHAR(Max) and I allow Null. I know in concept what a primary key is, but I don't have one (nor do I know how to set one up).
My VB.NET program that I'm working on is downloading a historical stock price chart from Yahoo, for every single ticker symbol in existence. The first 50,000 rows or so I added was super fast. Then I went to bed, and when I woke up it was still running - but the rate of row additions has slowed waaaaaay down; I noticed this around row 300,000. I always expected the rate of row addition to be constant over time, but obviously this is not so!
From browsing other Stack Overflow questions, I suspect my slow down is related to my piss-poor table setup. If this is the case, where should I begin first to fix this, and are there any good resources I could read up on to get started? I'm hoping this is something simple I can fix [code]....
I see the DataGridView control has a property "AllowUserToAddRows" that I can turn on or off but what if I want the ability to be context dependent. i.e. I want an event that will fire when the user attempts to add a row in which I can cancel if certain conditions aren't met but I can't find an appropriate event.
Whenever I create a table adpater the wizard does not create and update command. It creates Select Insert and Delete but no Update command. I have a primary key in the data and have completely deleted my dataset and created connection and table adtaer from scratch with still no update command wizard says it will create it but does not.
I have an issue with a data base updating it won't update for me in debgging mode it is stopping here on this bit of code which is highlighted in red. the error which comes up is .(update requires a valid update command when passed datarow collection with modified rows.)
Public Sub UpdateDataSource(ByVal ChangedRows As database.dataset1) Try 'The data source only needs to be updated if there are changes pending. If (Not (ChangedRows) Is Nothing) Then
I have a csv file. I need to open it, delete whole row on basis of a column value, Update few of the column values and save the file as .dat file. I am using VB.net 2010
Public Sub UpdateStaff(ByVal sr As StaffRecord) Dim oldSr As StaffRecord Dim q = From staff In db.StaffRecords Where staff.Employee_Number = sr.Employee_Number Select staff oldSr = q.First oldSr.Address_Line1 = sr.Address_Line1
[Code]...
The helper function I have written seems to do everything I want apart from update the db. Stepping through the code, the oldSr is updated by the new sr parameter but no update on submit changes.
I am completly flummoxed!!! I have writen code for updating my table from a form but when I use the same code only changing the table names it wont work I get the following message: "Update requires a valid Update Command when passed DataRow collection with modified rows" My codes are as follows:
I have a form that i want to be saved to my database. The form is adding a new record to my sql server 2005 database but it is not bringing the text over with it. The new record in my db is just an empty row. Here is my code.Add to database section ( i have removed the connectionstring for privacy reasons)
<%@ Page aspcompat="true" Debug="true" %> <html> <head> <title>Form to database</title>
I have tried reading the documentation and can't find a good example of how to add rows to a 5-column unboudn listview. I manually added the 5 columns thru the designer. I'm getting an error on the highlighted line of code. See attached screenshot.
Private Sub LoadComponentGrid() Try Dim lvItem As New ListViewItem
I am trying to code a DGV that can insert(update when row exists) and delete records. I use Visual Studio 2005, and code in VB.NET. I am using a MS SQL Database. Some pages i have tried but are either lacking in detail or what i need:
I working on a project that includes to call a certain type of method to each control, i have this
Private Sub txtBcNum1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtBcNum1.KeyPress
[Code]...
This code works like a charm if i want to allow only numbers and backspace on my textbox.Problem: I have 15 textboxes( txtBcNum1,txtBcNum2,....,txtBcNum15 ), what's the best way to call this function inside KeyPress method on each textboxes with out manually adding it to KeyPress method?
I'm am very new to Vb.net, I have coded in VBA.I have created a form that will open Microsoft Excel, add header text to the columns, and insert the text from a few of the controls located on my form ("not finished adding controls") when I click the Submit button.
My problem is that when I enter different data into those controls and click the submit button again, I get a new Excel Workbook with the new data.I need the new data the be submitted to the .Activecell.Offset(1,0) of the already open workbook.Ultimate Goal of Submit button is to open new Excel workbook, Enter multiple rows of data via Visual Basic Form.
I am trying to Add multiple rows to a datagridview using the below code, but at the moment it only adds 1 row and when i click add again it overwrites the previous entry and not add a second row: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim dt As New DataTable() dt.Columns.Add(New DataColumn("Make", GetType(String))) dt.Columns.Add(New DataColumn("Model", GetType(String))) [Code] ..... How do I manage to append the previous entry in the datagridview so multiple rows get added?
I have a piece of code that works for adding multiple rows to a dataset but I think that it is a lot of code and thought maybe someone may know a better way of doing it. I need to add rows to the dataset based on the selection of a combo box. ie if the user selects 15 the the program adds 15 rows to the dataset.
Case cboQty.SelectedItem = 3 Try Dim dr As DataRow
VB.NET 4.0 framework Windows Forms Application. So I have a DataGridView that I have dropped on my form in designer, set all the columns to readOnly, AllowUserToAddRows = FalseAllowUserToDeleteRows = False. Now for the part where it the code is going bad at.
My function Looks Like this: Private Sub fill_items() Dim prop As List(Of property_info) = db.property_info.ToList
I'm adding rows to a DataGridView via the following function, passing in one or more DataTables.The DataGrid is not aware what column(s) are coming back, but appears to build the column names okay.It's when it adds the individual cells (highlighted) that I get the following message:
ArgumentOutOfRangeException was unhandledSpecified argument was out of the range of valid values.Parameter name: rowIndex
I'm adding rows to a DataGridView via the following function, passing in one or more DataTables.The DataGrid is not aware what column(s) are coming back, but appears to build the column names okay.
[Code] The code in above had already create rows and columns(row=20,column=8),and all data have already insert into datagridview1 when i click button1. Now i want insert data again when i click button2. Because the datagriview have already create rows and columns. In button 2, i don't want create again rows and columns, i just want insert 10 rows data into datagriview1. Which part that i need to eliminate?
I've created my dataset and tableadapters using Stored Procedures from a SQL database.When coding the application, I have a variety datagridviews that populate when the user opens a particular record (most are sub-sets of data).My problem arises during the save routine. Because I am using SPs, my usual update line is something like this:[code]
Following is the code for updating rows of DataGridView in VB.Net. Private Sub Update_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Update.Click Dim con As New SqlConnection Dim com As New SqlCommand Dim ds As New DataSet [Code] ..... When I click to Submit button, its doesn't update the changed rows.
I am creating a online visitor tracking application in vb.net. This application tracks the visitor from my website and display records in my application.All the records are carry with xml web services [nusoap]. This Xml is bind to my datagridview control. Every time [on timer tick event] web services generate xml and bind to datagridview. This way i need to clean my datadgidview rows and re-bind again. so that i have lost my selection and order.Is there any way so that i can update my datagridview rows or can say cell value without clean rows.
1. textbox1 is itemcode data field 2. textbox2 is description data field 3. textbox3 is additional data field
1. user key '1' in textbox1 2. user key 'keyboard' in textbox2 3. user key '3' in textbox3, the '3' will add to the additional data field (row 0) then become 18.
1. user key '2' in textbox1 2. user key 'mouse' in textbox2 3. user key '4' in textbox3, the '4' should be add to the additional data field (row 1) but unfortunately the value number still remain the same unchanged.
question:how to update the number value to the other rows of field ?
I am using visual basic express 2008 . and i am adding few rows to the database using some stored procedure. it is working fine. after adding the row i am displaying in a grid using dataset . fine.but when i close the program and reopen the program i can't see any rows in the database..
I don't know the problem.this is my code to create a procedure.
Code: ALTER PROCEDURE AddNewStaff @SName varchar(50), @DOJ date,
Present i am working on TreeView and Datagridview in VB.NET 2008. In the Treeview one of Node if i will expand, corresponding number of ChildNodes, i want to create same number of rows on the DataGridview.
Assume my treeview Control Nodes and ChildNodes like below.
