How Can Clear And Re-populate The Grid View
Dec 17, 2010
I have DataGridView control which i populate with some rows from the database the database table which i work with changes a lot so every 30 seconds I re-query the database to check if there is new record or existing record changed or record deleted, I can't clear and re-populate the grid view because people might work with it and they're might doing some changes in some rows.
so if the row was changed i just want to update the changes in the existing row without recreating it, if some row deleted i want to remove it and if a row was added i want to add the new row.
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Jul 15, 2009
wan to ask about anyone know the code about how to clear all the data inside the data grid view without clear the binding source...
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Jan 19, 2010
Populate a data grid view?I sem to have no problem understanding gathering data from DB and populating text fields etc but data grid I do not understand yet. [code]...
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May 19, 2011
i am having sum textboxes and combos which have been populated accordingly. as in the attchment i enter the data in the textboxes/select values 4m combo and when click on save button all the related text is added to the datagridview's respective col. as desired. the problem is now that if suppose a user enters a wrong data and wants to edit/update the record already added the he will select the desired record from datagrid, double click and all the related data appears again on the combos and textboxes. the user then edits and click on save so that the selected record gets updated
[Code]...
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May 6, 2009
I have students who will be enrolled into a course. The student grid view has many columns like client_no, student_name, date_of_birth, address, etc. There are over 100000 students so I will need to filter the student grid view to find the correct student to enroll in the course. Once they are found, the user selects them and somehow moves them to the enrolled grid view. If a student drops out then they would be removed from the enrolled grid view.This process needs to be easy to understand and use. Are there any examples available or other suggestions on how to do this?
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Jan 14, 2010
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?
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May 9, 2012
I 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]...
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Nov 11, 2010
i have datagridview populated with stock code, name and description.And i have docked my datagridview to the bottom. so whenever the form is resized, the bottom section will be occupied completely with the datagridview.But i want to display one extra empty column and multiple empty rows to completely fill in the datagridview.The extra empty column width will be adjusted to the right end side of datagridview.And the no of empty rows will be generated based on how many is required to fill up to the bottomSo that i can create datagridview with full column and row even though some columns or rows are empty.
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Jul 15, 2009
how to cambine 2 data grid view into 1 data grid view
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Jun 21, 2010
My below codes in a button click event populate data in the grid upon the user click the button.
1. How do I know that my commandtext did not find any matching data to popup the message to the user - No Records found.
2. How do I clear the data in the grid before executing the below codes.
--conection to SQL Server is opened
myadaptor.SelectCommand = New SqlCommand
myadaptor.SelectCommand.Connection = myconection
[code]....
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Apr 22, 2009
I am using a datagridview as an input screen for repetitive inputs of a similar nature. Once I have saved the data, is it possible to clear the input in the grid for the next round of inputs. At present, all I seem to be able to do is clear all the rows and then create a new set of rows.
[Code]...
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Oct 13, 2011
What i am trying to do is get a user to change one drop down, which then calls an ajax function which posts to the code behind (vb.net file) then clears and populates another asp dropdown list with the data returned from the function..[code]...
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Nov 8, 2010
I'm using an array to populate a datagrid. I want a password protected button to be able to clear the data from the grid. I thought this would be fairly easy but so far it's not working. The following code doesn't generate any errors but the array still has data in it.
If txtPassword.Text = "bucswin" Then
Array.Clear(DataGridValues, 6, 23)
frmMain.DG1.Refresh()
[Code]....
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Jun 22, 2009
Public
Class LoanCalc
Private Sub butCalc_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butCalc.Click
'This procedure executes when the user clicks the Calculate
'button to produce a loan payment based on the requirements
'as stated in the service request.
'Variable Declarations
Dim douPrincipal As Double = Me.txtPrincipal.Text
Dim douInterest() As Double = {5.35, 5.5, 5.75}[CODE]......
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Sep 29, 2010
I have a data grid, and I am pulling data from a mysql table. How can I populate my grid with the data? I also want it so when someone double clicks the item it will perform an event. How can that be done as well?
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Mar 11, 2010
I use Vb 2003 and SQL server as the DB. The SQL server is on the server. I use a RS to populate the Data grid. But for some reason the it wont populate and I will have to get out of my program and then load it back on for the RS to populate the grid. I tried putting a message box just to give the RS to receive its data from the SERVER but still it wont work. It does not happen all the time. I don't think it is a problem with VB or SQL SERVER, I think the Server is not returning the request.
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May 10, 2010
how do i search using a stored procedure, and populate the data grid with data in the database?
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Mar 9, 2009
why I cannot populate the data grid with the results of my loop>
Public Class FormInput
'The disabled close button declarations;written by Achmad Zeanuri
Private Const MF_BYPOSITION = &H400
[Code].....
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Jul 21, 2010
I have a DataGridView control that is bound to a dataset that I set up in design mode. This grid will contain addresses for a client. The relationship is 1 client to many addresses. So, when the user selects a client, I wish for this grid to populate with only the address records for that client. How do I set up in code a way for the grid to recognize this?
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Oct 9, 2009
I am using VS2005 vb. I have two textboxes and one grid with two columns. I want to populate the grid values to text box while clicking the exact row?
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Jun 9, 2010
I have an vb 2008 express application that connects to an Access db via oledb (configured by the VB wizard), then from the db it feeds two datagrid views. It works perfectly in my PC however when installing it to other pcs get an exception...
Message: No value given fro on or more required parameters
Source: Microsoft Office Access Database Engine
StackTrace:
System.Data.OleDb.OleDbException: No value given for one or more required parameters.
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr)[code]......
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Mar 6, 2012
my data dosen't display in data grid view in WPF project this is my code is there any mistakes ?
Imports MySql.Data.MySqlClient
Imports System.Data
Class MainWindow
Dim con As MySqlConnection
Dim com As New MySqlCommand
[Code]...
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Mar 13, 2012
I have a grid view which uses SQL to calculate information that I need! I want to put this calculated total into another table in database.
SELECT StaffDetails.StaffID, SUM(HolidayRequests.RequestTotalDays) AS Expr1 FROM HolidayRequests INNER JOIN StaffDetails ON HolidayRequests.Username = StaffDetails.UserName WHERE (StaffDetails.StaffID = @staffID) GROUP BY StaffDetails.StaffID, HolidayRequests.ApprovalStatus HAVING (HolidayRequests.ApprovalStatus = N'approved')
It basically calculates the total number of approved holiday requests for a staff member which is correct. I want this number to then update the HolidayTaken field in another table each time a holiday is approved.
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Dec 12, 2009
How can I retrieve data from a gridview to text box in VB.NET? I want to select the first row of values (suppose that it contains:rollno and name) and to display it in textbox1 and textbox2. That is, I want to display the values of selected rows.
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Jan 30, 2010
I wanna ask something regarding the updating of database.
basically i am doing in 3 tier.
and i have a database table called 'SchoolTalkAppt'.
in the table itself, i have 1 empty column which i will be filling in using update statement.
the other columns are already created and filled into the table earlier.
i just have to update the 1 empty column (FirstName) and ALSO update the Status from 'pending' to 'Assigned'.
i decided to use drop down for both the name and the status.
the names available in the drop down i would be retrieving it from another table and populate it inside..while the status i manually added 2 options, 'Pending' and 'Assigned'.. not retrieving from database.
Since i am only required to update the FirstName and Status, in the update statement i put in the update for FirstName and Status only.[code]...
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Oct 23, 2011
Use of DataGridView in visual basic 2010 for view,insert, update, delete from access database by using code
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May 8, 2009
I'm getting a blank grid when I execute the cod e below, [code]...
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Jun 14, 2011
Just wondering how I can populate the child node in the following coding (I am able to populate the parent node but still wondering how to list out the child nodes)
===Extra Info===
I have a class to retrieve the Category Table (CategoryID, CateogryName, ParentID) and stored it via List<T>, when I need it, I declare CateogryDAL pass it to CateogryData.
[code].....
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Apr 4, 2011
I have a desktop application by which i have to send mail to multiple recipients. There is a grid view in a form. There are some customer list in the grid view and for each row there will be a check box. User can check or uncheck the check boxes. Also there is a send button. when user click on the send button then a mail will be sent to those customer whose check boxes are checked.
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Jun 18, 2009
I'me getting real dumb with this one....I have this class:
Public Class whatever
Public id as string
Public name as string
public date as string
end class
Wich I use with this code:
dim personlist as new arraylist
dim person as new whatever
person.id="1"[code].....
and then i repeat so that i can fill my arraylist with all the information that I want to show in my gridview.The problem is this:
gridview1.datasource = personlist
gridview1.databind()
When executing, I get an error saying :
The data source for GridView with id 'gdpersonlist' did not have any properties or attributes from which to generate columns. Ensure that your data source has content.
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