my below code not able to transfer data gridview to sql database table... giving below error : -
"Object reference not set to an instance of an object."
Protected Sub btnSave_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnSave.Click
Try
[Code].....
I am working in Vb Express with MsAccess as database. I have a form with Listview data from Listview is transferred to the TableCustomer it is retrieved from that table back to ListView and after some additions is stored back in Tabloe Customer.I have another table Transaction in the same database which has some common fields of Customer Table in addition to its own fields. My two questions are :. How the data of one table can be automatically transferred to other table in MsAccess?
View 7 Repliesi'm working on visual studio 2005 vb.net language windows application.and i'm using MS access database with 2 tables customers and stopped. i have a form that the user will enter the IP and the stop date and when i press the button stop i want the all fields that r related to this IP to be transfered from customers to stoppedi wrote this code but i'm getting syntax error but i couldn't recognize the error. please i need help and how to slove it. this is my code:
[Code]...
I am working in VbExpress2008 with MsAccess as database.I have following code for transfer of data from Listview to table in MsAccess.
'To transfer data to the table Inventory
Dim cmdText4 As String = "INSERT INTO Inventory(SDate,Description,Quantity,Price,Amount,ItemId) VALUES (?,?,?,?,?,?) "
If con.State = ConnectionState.Closed Then con.Open()
Dim j As Integer
[code]....
My requirement is that I want to transfer selective data from listview to Inventory table based on ItemId. Like i have ItemId 1,2 3 4 to 32. I want that only data relating to ItemId 2,3,4 and 5 be transferred to Inventory table and the rest of data be transferred to other table.
Source: DataTable
Destination: Access Database Table
I should mention that the DataTable contains data resulted by an SQL SELECT query and it's not related to the "targeted" Access Database Table.
I am currently building a tool which uses access as the backend and excel as the user interface (I am unable to change the applications).I would like to be able to use the listview option, howver I haven't a clue and searching on the internet is causing me a headache.
Basically what I would like to do is get the heading names from the table in access and populate the listview, later on I will what it to look at specifc data to populate the list view.
My connections is already open, I think I'm ok witht he sql, its just the other bits.
I am working on a project that is able to display real time data from sensors from micro-controller. I am able to do so by sending the data through the serial port and then use vb 2005 to show the data. However, I want to save those data from vb 2005 to excel. How am I able to do it ? I am able to use vb to insert data to excel step by step, cell by cell using the following codes.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim oExcel As Object
Dim oBook As Object
Dim oSheet As Object
[code]....
Lets say TextBox1.Text and TextBox2.Text is my real time data. How do I save it to the excel sheet displaying the data in cell A2, A3, A4 when the time goes by. Eg. If I want to save TextBox1.Text to excel it would be, the data in the 1st seconds in cell A2, data in the 2nd seconds in A3, 3rd seconds A4, 4th seconds in A5, A6 and so on...
Well the problem is probably me not doing something right but we will se.I have a form w/ just a datagridview on it. I have set the data gridview to connect to a table. I adjust the querry to only return 1 row.So it looks like select * from table where ident=@realident..so the problem is i want to use a variable from the form to be the @realident and i want it to auto load when the form loads not have to type it into the tool bar like you have to do by default.Also once the data is returned I would like to be able to edit a field or two in that data and have it save back to the db.
View 3 RepliesUPDATED: Here is the SP, it doesn't match exactly because of ongoing testing, but you get the jist. Some fields are commented out because of testing...
[Code]...
So in this gridview, there is a column for status and I want to have a drop down list with Pass, Pending, Fail appear when the edit button is clicked. These values are already in a table, so I need to somehow bind from this table to each ddl for every row.Here is the column from the gridview. As you can see, I would like to just have a label showing when not in edit mode, and a ddl when the edit button is pressed
<asp:TemplateField HeaderText="During Production Status" SortExpression="DuringProductionStatus">
<EditItemTemplate>
[code]......
I am using below code for data extraction from gridview. but now i added edit or delete or update option with image in gridview.. then it does not work... make the changes in below code for the same logic..but delete,edit and update image should not come in my excel... my procedure
[Code]...
how can I transfer the value of textbox to a gridview or when I select a value of a gridview it will be transfer to another gridview.
View 1 RepliesI would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.
Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
I have two questions:
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it
have made the data table in vb code, and it works flawlessly. It gets its values from labels which are part of a calculation.It shows the information to the user in a datagridview. Now i would like it to add new rows and fill them in if the user has already entered the data once and it has been logged in the datagridview.here is the current
'DATA TABLE
Dim Table1 As DataTable
Table1 = New DataTable("CF Log")
[code].....
just wondering how do i transfer table's records to another table??i'm wondering where do i put the queries, or am i gonna put it in my stored proc?
View 3 RepliesI've got the following code for a password but need it the program to set a certain password. At the moment I just type in anything and it lets me get on with the program.
[Code]....
I have SQL 2005 table with columns TypeId(int) & Description(ntext datatype).
The Description column has XML file content as value in the table.
Now i want to read the data into a dataset in VB.Net. How to do it in VB.Net. I am using Winforms and VB.Net in VS 2005.
I have SQL 2005 table with columns TypeId(int) & Description(ntext datatype). The Description column has XML file content as value in the table. Now i want to read the data into a dataset in VB.Net. How to do it in VB.Net. I am using Winforms and VB.Net in VS 2005. Below i have given the xml file content.
<?xml version="1.0" encoding="Windows-1252" ?> - <SummaryPageComponent xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> - <categories>
[Code].....
I am having to create a data adapter to pull data into a dataset, then loop through that dataset in order to add information into a new column from a separate data source. My first data source is access. My second data source is oracle. Here is the code I have to do this, which works well when I show it in a grid.
Dim da As New OleDbDataAdapter("SELECT tblSummary.WorkOrderNumber, tblLabor.Crew, tblLabor.NumberOfMechanics, tblLabor.NumberOfHoursPerMechanic, tblTasks.TaskNumber, tblTasks.TaskDescription FROM (tblLabor tblLabor INNER JOIN tblTasks tblTasks ON tblLabor.TaskID=tblTasks.TaskID) INNER JOIN tblSummary tblSummary ON tblTasks.JobPlanNumber=tblSummary.JobPlanNumber WHERE
[code]....
how I can search through this data table. For instance, I want to see only rows that are in this data table that have "Replace" somewhere in the "Description" field, which is the field I added from my second data source. How do I do this? Is there an easier way to do all this instead of filling my dataset from the first source and then adding columns from the second source by looping?
Currently I add data to a hash table, then later on I loop through the hash table. To my horror I discovered that when you use FOR EACH with a hash table it doesn't return the items in the order you added them.I'm looking for a collection that I can add, edit and delete items from and loop through from start to end in that order.
View 28 RepliesI start with a text file containing information such as this: Monday, Tuesday, Wednesday, Thursday, Friday 12:00:00.1, 12:00:00.1, 12:00:00.1, 12:00:00.1, 12:00:00.1 I made up the values of course but the idea is exactly the same. I need to have an if statement that if the text document has a record of Monday, then it is to put something like an X in the corresponding column in a data table. I'm sure I confused this way more than need be but I hope you get the most of it and I can elaborate if need be.
View 6 RepliesI have two tables (Book and Transaction). IN my form, the user will add into a textbox a value called Book_Id. That value is added to the column named Book_Id of table_transaction. Now, in the table_book, there is also a column named Book_Id and another called Book_Name. What I want is to add the value of Book_Name from table_books into the column Book_Name on table_transactions, where the value of Book_Id entered by the user and added to table_transactions matches the Book_Id on table_books which by the way is already recorded earlier.
Here is my code, but the value being added to the Book_Name of table_transactions is the Book_Id itself. I tried the Insert into Table1 Select * from Table 2 syntax, but its not applicable as it added a new record that only contains the Book_Name by itself. [code]...
VB.NET:i want to select data from sql server 2005 DB table and displaying into text box that depends on combo box selection using VB.NET
View 1 RepliesHas anybody ran into this error before?
View 2 RepliesI am newbie in VS 2005 and started learning. Can you please tell me how to Pop up the data from a table when there is a key press in the textbox.
View 11 Replies[Code]...
I could not get a reply for this from someone. I tried something like this and it worked well for insertion of records from LIstView to table. This code does not allow duplicate records due to ExecuteNonQuery function. Like if i try to insert another record with FirstName John it gives error at ExecuteNonQuery function.
[Code]...
I have exported data from a SQL Server table into a XML file and the output looks like this:
Filename = 11190.xml
Table name = LRTest
<NewDataSet>
[Code].....
Now I want to save the above XML file into my SQL Server 2005 table
With the same columns using vb.net windows forms, in every exported xml file there are 100 to 200 records. .
I'm new to Visual Basic, VS2005.I've added a Table to the WebForm. At Default.aspx this code was added automatically:
[Code]...
I have a 20 x 20 Excel table that I want to transfer to a numeric array in VB 2008 Express.
View 1 Repliesan error message when I am trying to load the data into a listbox and the value in the table is NULL. I am new in programming and I am using vb2005 Here is my
[Code]...
