I have created a program using VB2008 it has two forms that I am having a problem with FORM2 has a textbox and a button that I use to pass a string to the code in FORM3 that is used to populate DATAGRIDVIEW1. I am using MS ACCESS 2007 for my database. I have supplied the code I am having trouble with below. When I run the program and type a string into the textbox and press the button I get this error: oledbException was unhandled: No value given for one or more required parameters. The area that was highlighted was m_daDataAdapter.Fill(ds). How can I get this code to populate the
I use visual baisc 2008 if i use "mouse click" or "use arrow keys " in the datagridview1 then i want that always the focus in on the textfield => Number_Pieces.text.[code]
I have create a dataset and attached rows to the DataGridview1. I modifed the rows and attached to the DataGridView2.I find that DataGridView1 and DataGridView2 contains the Same values as modified.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim ds As New DataSet ds = CreateDataSet() DataGridView1.DataSource = ds.Tables("Product")
I created a simple form which has two tableadapters to a Access database. On the form I have a combobox that uses the Category TableAdapter and it populates on load fine. the other control is a DataGridView1 which is popluated by the Message Table Adapter based on which Category is selected. It does NOT populate on LOAD and thats my problem.
So the result I'm looking for is when you run the app and my first form loads it
A. Chooses the frist Category in the list (and it does that fine)
B. Populates the DataGridView1 based on the first Category (this is my problem) The DataGridView1 does Populate after I re-select the Category in the combobox1.
Here is my code below.
Public Class FunnyMessages Dim catid As Integer Private Sub FunnyMessages_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I don't want the last empty row appear in my DataGridView1. How to get rid of it? Please advise. I am adding data through textboxes. The DataGridview is only to see the data.
I'm having problem here with my code. I would like to Update the Database with my DataGridView1 when Click the Button1. But from the code below,I found that an Error have occured.Error from Visual Studio 2008= System.Data: Missing the DataColumn 'DO_No'in the DataTable 'Main_table' for the SourceColumn 'DO_No'.
I have 2 datagridview with name datagridview1, datagridview2. when cell_click on datagridview1, datagridview2 in Form2 will show show on datagridview1 as below:
datagridview1.Controls.Add(Form2)
I cannot set focus to datagridview2 because system always focus to datagridview1
i use below code to open CSV file with openfiledialog to datagridview1. So i can show my CSV file at datagridview1.my problem is thaif CSV file have 5-10 line, it works good. But if CSV file 1000 line, it doesnt open. I have a error message that "it more than 60 second and it get CPU and RAM so much. You should use something(I dont understand what it means so i wrote something)"
I use dbf files from db2k in my application.When I try to connect, it takes a long time and I find the application exited without any error msg.The connection string I use:Return "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\agbvseng01APPLISNomenclature_Eng_Bvs;Extended Properties=dBASE IV" Data source is on a server.I dont know why this happens.
I designed a DAL (data access layer). This DAL mainly consists of a handfull of methods to call stored procedures. All methods are shared. So no instance generation of the DAL class occurs.
The DAL with it's single class is located in an own project. The connection string is defined in the app-config file of this project.
I want other applications to use the DAL class by referencing the dll generated by the DAL-project. For this reason, I can not any longer define the connection string in the DAL app-config as it is, because the client application determines which database needs to be used.
- Dropping the "shared" keyword of my methods. Create an instance of the DAL class. Add a property for the connection string. When application starts, create one global or multiple local instance/s of the DAL and set it's connection string property.
Comment: I don't like this, because it implies more coding work on the application code side (create instance of class, assign connection string)
- Granting the DAC class access to the connection string defined in the application code by adding a connection string property inside the application code. Thus the DAC class remains "shared".
Comment: I'd need to set a reference from the DAL to the application code during without knowing the application yet. I could try stack tracing or something like that. But it feels to convoluted for me.
I have an vb.net app that runs a SQL query and then emails if the results are > 0 I would like to add the results of the query in the body of the email. thoughts?
How Change the Header Names in the DataGridView1 By DataGridView2 In the sense I want to change the title in the pole DataGridView1 Through the fields in the first column DataGridView2 The first field in DataGridVeiw2 =The first column heading in the DataGridView1 the second field in DataGridVeiw2 =The second column heading in the DataGridView1 And so on
I am using 2 bound datagridviews.Each on it's own form, bound to the same table.
DGV1 is for displaying
DGV2 is for searching
I am wanting to double click a row on the DGV2 on search form2, closing it, and have the same row highlighted, selected or displayed first on the DGV1 on the display form1.
I need to loop through my datagridview1 to obtain the name of each of the columns to set the attributes. I'm not sure what I need to look for when doing this.
I tried:
For Each Field As String In DataGridView1.DataGridViewColumn and For Each Field As String In DataGridView1.Columns But it's giving me errors. What would be the proper way to loop through the DatGridView and get the name of each column?
I've tried absolutely everything and i've searched for a while on here too datagridview1 object on my form however it has appro 130,000 records and i need to export them to the following .. csv / xls / xlsxI've tried several pieces of code and searched for at least a day trying to find something suitable and quick enough to export all records.
I would like to know the faster method to copy all the data from DataGridView1 to DataGridView2 Is this possible without using any loop? DataGridView1 is not bind to any database, is just filled using
DataGridView1.Item(1, 1).Value = "Data1"
I tried to simply assign
DataGridView1 = DataGridView2
it work, it copy all the data, but it doesnt show this data in the component on the form?
I'm having trouble updating my access database using DataGridView1 on my form. I created a DataGridView on my form linking it to an access database data source. At run time, the DataGridView shows the content of my access database. When I edit the database data in DataGridView, it looks like the database is being updated but when I close the form and reopen, the database is not updated. Do I have to write code and assign it to a button to update the access database? Is there a way to update the database once a new value is entered in the DataGridView? Am I missing a setting that does this automatically?
