I have a form with a datagridview on it. I have a save button that saves the data from the datagridview to the database.After the button (save) is clicked I want the datagridview to be cleared of the data that is present in the dataGirdView.
View 9 RepliesHow can i clear the contents of a datagridview.[code]...
View 2 RepliesPublic
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]......
If for textbox it is textbox1.clear, etc.What is the equivalent for combobox to clear the value.
View 1 RepliesI am doing a school project and have created a small program that allows the user to create a binary search tree and then visually displays it on the screen as a familiar tree structure, how the addition, deletion of nodes in the tree works along with many other things such as different tree traversals. I currently using a large panel on the main form and then adding user controls containing a textbox that displays imputed values,then using the panels paint event I draw a line between the user controls, this works fine however for deletion of a node I need to clear the main panel of the nodes that will change and add them to the panel again or just clear the hole panel and redraw the whole tree
View 1 RepliesI need to delete/clear all data from an existing csv file from Visual Basic. This seems really simple but I have had a lot of problems making it happen!
View 1 RepliesI'd just like to know how to clear a listbox of its entire contents. I know in VB6 it was something along the line of 'lstBox.Clear', but that doesn't seem to be the case in this new version of VB.
View 3 Replieshow I can clear the contents of a listbox and all other feilds.this is what I have upto now, and this clears texbox, checkboxes ect... but it wont clear contents that appears in a listbox:
[code]...
I have this:
Dim split As String() = temp_string.Split(",")
''#feed all info into global variables
patient_id = split(0)
doc_name = split(1)
lot__no = split(2)
patient_name = split(3)
How do I clear all the contents of split() ?
I am using the following code for a checkbox, if checked it should print the text defined, unchceked, it clears the items in the ricktextbox. My problem is it prints fine (lets say it prints two lines) as defined, when I uncheck, it clears the text in rich text box, but when I check again, the text appears in the richtext box, but displayed from 4th line. I need to restart from the beginning/ or at least from the next available line. I cant use clear() since it erase all the contents as i have another 3 checkbox items placed.
If CheckBox1.Checked Then
richtextbox.SelectionColor() = Color.Blue
richtextbox.AppendText("Urgent:")
richtextbox.AppendText(CheckBox1.Text.ToString + vbNewLine)
Else
richtextbox.Refresh()
End If
What I have is on my form there are several text boxes. These text boxes are for user input and attached to each text box is a Private Sub txtBox1_KeyPress function. In that function I have some validation code to check that the user is inputing only what I want them to. And if it doesnt it will pop up a message box telling them so, then it is supposed to clear the text box so the user can try again. But no matter what I try, the text box does not clear it still keeps the last character typed (the invalid one).
Here is the code for one of the text boxes.
Private Sub txtLanIp_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtLanIp.KeyPress
Dim strEmpty As String = ""
If Char.IsDigit(e.KeyChar) = True Or Char.IsPunctuation(e.KeyChar) = True Or Char.IsControl(e.KeyChar) = True Then
'do nothing
[code]....
The commented methods at the bottom are some of the other things ive tried to make this work. The txtLanIp.text.clear() is what ive tried from the beginning. I have also tried setting the text to "", I even created an empty string and set the .Text value to it but no matter what it wont remove that character. I have also tried various trim(), len(), Select() functions, most either give me an 'index out of range error', a 'length cannot be less than zero' error or a general ExceptionOutOfBounds error. I am just tearing my hair out as to why the simple way doesnt work, there is no logical reason why and it gives no error it just doesn't clear the box.
I have also tried moving the validation to a _LostFocus but e.KeyChar isnt a valid method or property for that declaration, which doesn't surprise me but I wanted to try everything.I dont see how it would matter in this case but I am running Windows XP Pro SP3, though I also see the same behavior in Windows 7 64 bit ultimate sp1 and windows 7 64 bit pro.
i m trying to clear my all row in datagridview. Here is simply code
Me.DatabaseDataSet.Clear()
Me.StuffTableAdapter.Update(Me.DatabaseDataSet)
Me.DatabaseDataSet.AcceptChanges()
It's almost clear datagridview, but don't save this changes in base. I quite the app and start it again then old row are back.
How do I clear a DataGridView? Basically I want the user to be able to click the button again that fills it and it will erase everything and refresh the data.
View 17 RepliesI am using datagridview.rows.clear() to empty a grid that i can't clear it. is there another way to empty the grid?
View 1 RepliesI use graphics.fillrectangle to draw rectangle in datagrid
and i want remove all rectangle , it's possible ?
I keep finding ways to clear all the rows of a datagridview... but i want to keep my rows..is there an easier way than looping through every cell to clear all the values out of the cells of the datagridview??
View 5 Replieshow to clear the old data from the datagridview in vb.net.. the below code is retrieving the data from table and display in a gridview for particular person. but when i wanna check the next person record if he dosen't have record so the previous data still will not erased?
Dim c As New sqlStmt
c.myCon()
Dim da As New SqlDataAdapter("SELECT * FROM Experience WHERE CID='" &
[Code]....
This is the problem I'm having, I have a grid that I need to update after the user enters some infoI've managed to get the grid to refresh adding the "new data" to the end of the list (not what I need)oad just the new data.
The steps I'm taking are as follows:
I'm clearing the DataSet using ds.clear()
rerunning my Queries
[code].....
I am using V Studio 2005, VB. In my application, I am asking the user to enter an ID and click on Search button. Now, when the user enter an ID for the first time, all the columns and rows appear fine in the DataGridView. When the user enters an ID second time (or third, etc), I want to erase the previous contents of the DataGridView and display the new values. For this, I am using .Clear() method of DataGridView which isn't giving me what I want. It is simply clearing the "previous values" and not deleting the "row".
View 6 Repliesdatagridview1.rows.clear()
And this one
me.datagridview.rows.clear()
It says I cannot clear the datagridview list.
I have a mainForm with a DataGridView control. This DataGridView is not bound to any datasource. All Rows and Columns were added. On another Form, I have a button. When I click it I want the DataGridView to clear all rows.
Does not work, in button click event:
Form1.DatagridView1.rows.clear
Also does not work:
A "Public Sub" on the first form, invoked by the button press - so the change is made within the same form.
I am trying to clear current datagridview data source and then set a new one to it. But it doesn't clear the old one and the new one doesn't set unless i click run the code twice.I have tried different ways but none of them works here is the code i am trying:
[Code]...
I'm trying to clear a DataTable and repopulate it, and the DataTable is bound to a DataGridView. Here's the code I'm executing:
vb.net
Using reader As MySqlDataReader = myCommand.ExecuteReader
SyncLock tableLock
running.Clear()
[Code]...
If you want to replace this standard messagebox, handle the DataError-expection
When debugging, there is no break in the code. The messagebox just pops up without showing me exaclty where the error is located.
How i clear all data and not delete data or column in datagridview?
View 1 RepliesI creating an EPOS System..I have a datagrid that stores details about all of the items which the user wishes to buy in the transaction.However if the user changes his mind I have a feature that cancels the row in the datagrid.[code]The code functions fine, however a problem arises if I enter a new row into the datagridview, the previous row I recently cancelled appears again.
View 11 RepliesI use Visual basic 8.0.I have a bound Datagridview.This Datagridview has 25 row.
Only thing i want to clear the row Contents of a specific row.I want not delete of remove the row!
I am pulling data from iSeries and populating a DataGridView. I want to select all records in dgv, where the hire date Month is the same as the current month. Then i can automatically email a reminder to all managers if they have any employees that have a anniversary date in month.
My problem is that i do not know how to place multiple records from dgv into the body of email. Everything else appears to be working.
Imports IBM.Data.DB2.iSeries
Imports System
Imports System.Windows.Forms
[Code].....
How to print the datagridview contents
View 8 RepliesHow should i copy contents of Datagridview to SQL Server
View 2 RepliesI want to create a datatable using he contents of a DataGridView.
View 9 Replies