Here is the code i am using to save record from data grid to db
Try
For r = 0 To DataGridView1.RowCount - 2 ' Why RowCount-2?
For Each cell As DataGridViewCell In DataGridView1.Rows(r).Cells
[Code]......
Error is
"Conversion Form type dbnull to Type date is not valid" Please view the attached image what should i do to remove this error.
how to code for the save button in vb.net datagrid view by using insert into sql and update sql statements (it should be able to insert & update the data grid and save the changes) when the save button is clicked .
View 2 RepliesI use This Code To Save Data in Table First I delete record Then Insert record
View 4 Repliesi have a form which search data in specific date and show result in the datagridview, what i want is that when delete button is clicked all datas that in the datagridview will be deleted sameway in the database
View 3 RepliesI m workin on vb.net ado.net oledb, I have also added datagrid Control to my form
for retriving database from .Mdb file i used following code
Code:
'decleared Name Space
Imports System.Data.OleDb
[Code]....
or when i click any record in datagrid, then the current record of dataset also should move to clicked record of datagrid, so that i also may see datagrid's clicked record in textboxes
in short i want to use default feature of vb6's ado control, when we bind datagrid with ado control, it worked autometically, both data grid and adodc wer connected each other at a time, so that moving next record also apears in datagrid.
im having problem with my simple library i dont know what is the code to search a record in the data grid im ung adodc any one kindly help with my project only the search code.. is my problem so how to search in the data grid? url...
View 16 RepliesI have master detail form with two datagrids. customer and order detail.I have relationship between customer and order detail on customerid.How do i delete record from order detail when i click delete button to delete record from customer datagrid.Here is the code so far.
Private Sub btndelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndelete.Click
'Me.CustomerTableAdapter.Fill(Me.CustomerDataSet.Customer)
[code]......
<VB.Net 2010 + SQL Server 2008 + Linq To Sql>
Let's say I have ten rows on a data grid and I have changed data of three rows.
I am trying to save data by Linq for those three rows, but I am not sure how it is possible to save them.
I can do it by looping whole rows by checking each row for any change.
Is there any smarter way rather than looping by code, such as For Next.
save, edit and delete files in the data grid.
View 1 RepliesIn My Form I have "DataGridView1" and Button1 "Save as Word file" button2 "Open from file"
View 2 RepliesI can't seem to save data in the database when updating a record. The record appears to be updated and even displays the new record on my form but as soon as I close and restart the program the old record is back and no changes are made to the database. Is there something im missing here ?
If CN2.State = ConnectionState.Open Then
Dim Comand As New SqlCeCommand("SELECT * From Incentives Where IncentiveCode = '" & TxtCode.Text & "'", CN2)
Dim rs As SqlCeResultSet
rs = Comand.ExecuteResultSet(ResultSetOptions.Sensitive + ResultSetOptions.Updatable)
If rs.Read Then
[Code]...
How do I force users to save the current record (if current record has changed) and not let user go to the next record unless the save button is pressed?
View 5 RepliesThis code i had use for create a field in DB Access 2003:
SQL = "ALTER TABLE plano_contas ADD declperiodica06A char(40) WITH COMPRESSION NULL)"
Dim command1 As New OleDb.OleDbCommand(SQL, con1)
con1.Open()
command1.ExecuteNonQuery()
con1.Close()
like you see the code create a Text field with 40 lenght...Well the problem is:When i save a new record the record it's save in this mode: "100......... .........................." - the points means spaces and should be:"100"After try a lot of things i'm without more solutions in find why this happen!
This is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005.We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below:We've tried looking through all of the properties of the DataGridView control, and found some interesting things that looked promising such as the DataGridViewAdvancedHeaderStyle, and DataGridViewHeaderBorderStyle, but none of it seems to allow you to change the colors on it.Does anyone know how to do this without remaking the entire thing with a GDI+ control?
View 2 RepliesIs there a way to automatically put a Data Grid Row Column in a data Grid?[code]...
View 5 Repliesi've a problem with deleting record from datagrid. i have few columns in my datatable and all publish on to a grid and under "ID" column there are id nos and they are "NOT" unique. user able to search using this "ID" no. problem comes in deleting records since the "ID" is not unique. if i use following command to delete; it deletes all the records which are having same "ID". but i want to delete only the current row records,
sqlDelete = "DELETE * FROM table1 WHERE ID ='" & form1.dgv1.CurrentRow.Cells(0).Value.ToString & "'"
VS 2005 - WinForms - VB - DataGridView Is there a way to have the New Record position to be at the top of the grid? I could do this using Janus Grid?
View 5 RepliesI have the below code that i am trying to have two datagrids with a grid splityter in the middle. The split seems to be working fine but the issue i am having is when I populate the datagrid it is growing in height and changing the splitter instead of leaving the height alone and adding scroll bars.
What simple thing am I overlooking?
<Grid x:Name="gdHistory" Grid.Column="0" Grid.Row="2" >
<Grid.RowDefinitions>
[code].....
is my coding and i want delete the record from grid view and data base also .. but i can only delete from grid view
this my Module coding
Imports System.Data.OleDb
Module Module1
Public con As New OleDbConnection
[Code]....
I have a table adapter which is bind to a grid, and I have three button insert, update and delete. Insert and update are working fine, when I delete a record in grid it is been deleted but it is not been deleted in database. Once again if I run the application the deleted record is shown.
View 4 RepliesI have a problem with importing an excel into a data grid.
Here is my code:
Try
Dim _Obj As New ExcelConnection.ExcelConnection
_Obj.ImportAttendence("c:Info_pc.xls", DataGrid1)
Catch ex As Exception
End Try
In the excel i have numers and text and "Service Pack", "Processor Speed" and "Numar procesoare(Number of processors)" and the values for these are numers. in the data grid when i import the excel those values doesn't appear, i receive the value "null".
I would like to know how to select multiple records from a gridview, (ie checkboxes in itemtemplate) and process SQL statements on the records. So in short, its basically selecting records from a grid view by ticking the check boxes, and clicking a process button which then proceeds to execute the SQL statements corresponding to the records selected.[URL]..
View 1 RepliesI have 1 datagridview and i want to transfer all records to another datagridview, how can i possibly do that. Newbie here. This is my code in transferring 1 record to another datagridview to another one.
[Code]...
My system still show the "record has been added" and save/insert the data even if i chose the "no" button. I think I miss something on our codes. Should I add something?
Here's the scenario: If "Yes" (button) will be clicked, it'll save the data and clear the fields. If "no" (button), it'll clear the fields and shouldn't save anything.
Here are the codes:
Private Sub btnsave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsave.Click
If newname.Text = "" Or newaddress.Text = "" Then
MsgBox("Please fill-up all the requirements.", vbExclamation, "*** System")
Else
[CODE].........................
I'm writing a windows forms project in Visual Studio 2008 - VB, data are stored in SQL database.- I have a date field within Datagrid that could be Null or have a date in it. I had set it to show <none> when it's Null (Null is allowed for this field). The problem that I got is when user would need to delete the date from that date cell within the grid. I'm getting an error immediately after pressing "Delete" to clear the cell value. I had put in a work around - added the code for grid DataError event and assigned DBNull.Value to that cell and user is able to type in <none> for that cell or just press save, but it won't allow to go to the next cell in the grid if you don't save or type <none>. I'm sure that there is a better way handlig situation like that. May be using different event? I wasn't able to find anything else on it.- the other issue in the datagrid - if user fills in 3 cells out of 5 for example and press save while in the 3d cell - it won't save the value in the 3d cell. I also put a work around to check for the values in specific cells before saving but the problem with it - few cells could be Null (and should be Null). I can't check every single cell value and force user to type something in it.
View 12 Replieshow to cambine 2 data grid view into 1 data grid view
View 2 RepliesI am trying to add a new record everytime i do my navigation gets all messed up I also need an update button... I would like so when i hit new record the record of will be(ex. If Im adding record number 30 it will say record 30 of 30, hit add new it will say record 31 of 31) my code is below.
'Class File
Module Class1
Public MasterConnection As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=db1.mdb;Persist Security Info=False;")
[code].....
I have a VB project with a form where user adds/modifies the data, data are stored in SQL. On the form there are 2 tables that are linked by employee ID. When I test the process and insert a new employee record and add new comment for this new employee in DataGridView - when I save it I get an error that "Object reference is not set to an instance of an object". During more detailed debug it says that CurrentCell is set to Nothing - even that I do have values in all fields.I do set employee ID in the related table in the Grid to the value from the employee record - so all primary keys do have value and the comment is saved after all but I get an error and saved comment dissapears from the screen right after saving. When I pull the same new record again - everything is saved. What am I missing and how to avoid the error and dissapearing of the saved comment?
Also - I tried to save the new employee data in the first table first and then add comments - it didn't solve the problem. But if I add first part of information in the main table, save and close the form, then go back and add comment - it works fine. The problem is - it's not convenient for the user - they'd like to enter everything at once.
Private Sub TblCommentsBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TblCommentsBindingNavigatorSaveItem.Click
Me.Validate()[code]....
I just want to display data in a DataGridView (from SQL - already made the connection) based on what is selected in a ComboBox (data that is also coming from SQL). The 2 are separete on the form. I am using VB 2010.
This doesn't work for me:
objCommand2.CommandText = "SELECT ProductID, Name, Color, Size, ListPrice FROM SalesLT.Product WHERE ProductCategoryID = " & cbCategory.SelectedValue
[code].....
The control comes up blank??Imports System.Data Imports System.Data.OleDb Public Class Form1
[Code]...