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automatically check a checkbox fields in a datagridview windows form application

hello all,

i need a windows form application written in vb 2005 that talks to a sql server 2005 database.

i have a database in my local installation of sql server 2005 called "test". there is one table in it, called "users".

the fields of the table(see attached snippet) are

userid(identity-primary key),username(varchar(50)),isactive(datatype=bit default value=false=0)

some sample data for this table could be

userid    username         isactive
1             sin                      false

2             prn                    false

3            george               false

4           jane                    false




1) i need to connect to this database

2) and bring all the information from this table to a datagridview

3) i have a simple textbox and a button in this form.

what i want to do is this

1) type a number p.x 3 in the textfield

2) then press  the button on the form

3) the row in the datagridview that has userid=3, to check the checkbox and make the isactive checkbox=checked = true

thanks a lot
CREATE TABLE [dbo].[users](
	[userid] [int] IDENTITY(1,1) NOT NULL,
	[username] [varchar](50) NOT NULL,
	[isactive] [bit] NOT NULL,
 CONSTRAINT [PK_users] PRIMARY KEY CLUSTERED 
(
	[userid] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

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nikolaosk
Asked:
nikolaosk
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1 Solution
 
web4netCommented:
Greetings,
 
Let me know if the following code helps you ... if not, I have other solutions.
 

dim dtTemp as DataTable = New DataTable
 
Dim colItem As New DataColumn("Items")
colItem.DataType = System.Type.GetType("System.String")
dtTemp.Columns.Add(colItem)
 
Dim colSelection1 As New DataColumn("Selection1")
colSelection1.DataType = System.Type.GetType("System.Boolean")
dtTemp.Columns.Add(colSelection1)
 
Dim colSelection2 As New DataColumn("Selection2")
colSelection2.DataType = System.Type.GetType("System.Boolean")
dtTemp.Columns.Add(colSelection2)
 
'That will give you 3 columns and then you can add your data by adding rows
Dim newRow As DataRow
newRow = dtTemp.NewRow
newRow.Item("Item")= "Some Item"
newRow.Item("Selection1")=False   'blank checkbox
newRow.Item("Selection2")=False   'blank checkbox
dtTemp.Rows.Add(newRow)

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nikolaoskAuthor Commented:
should i place this code in the button click event handler
?
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web4netCommented:
Yes. Or, any other event.
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nikolaoskAuthor Commented:
well ,where is the code tha connects with the db?
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web4netCommented:
You have it.
Just be creative to integrate your code with the code above.
You can add the code above to your onload event and combine it with your connection string.
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web4netCommented:
would you like me to propose another solution?
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nikolaoskAuthor Commented:
thanks. no, no at the moment. give me a sec to grasp this solution.
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the_bachelorCommented:
here is what I would do
1- Bring the data from the table to the Application as a dataset and bind the dataset to the Gridview on page/form load

2- On the button click
     a. Wrtire a routine to change the IsActive Filed to True where userId = 3
     b. Rebind the data to the Gridview
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nikolaoskAuthor Commented:
well

1) i have created a windows vb application form

2) i have placed a button , a textfield and a datagridview on the form

3) i have used server explorer to successfully connect to my sql server 2005 and connect successfully to my database and table

4) i have used the disconnected model (dataset) and through my connection string i was able to get all the data in my datagridview

that is done

so i have all my data in the gridview and the name of the dataset is "testdataset".


what i want is this.

when i write in the textbox the number "3" , then i want by clicking the button, the record with userid=3 to be selected and the checkbox to be checked=value =true.

the controls are:button1,form1,textfield1,datagridview1 and the name of the dataset is testdataset.


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nikolaoskAuthor Commented:
i am trying to be as clear as possible. i do not want to write to the table. just to retrieve tha data. i have done that.

then i want programmatically to check the checkbox if the number in the textbox matches the number  of the userid field
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nikolaoskAuthor Commented:
you wrote


"here is what I would do
1- Bring the data from the table to the Application as a dataset and bind the dataset to the Gridview on page/form load

2- On the button click
     a. Wrtire a routine to change the IsActive Filed to True where userId = 3
     b. Rebind the data to the Gridview"


exactly. i need this code. thanks a lot
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the_bachelorCommented:
Assuming you know the rowindex associated with the userid that you wanna modify, here is the code to to check the checkbox. WITHOUT writing to the database to persist the change.

Remeber those Indexes are zero based
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        'say you know the row index associated with the user id.
        'Here we are just gonna assume the the rowidex is the same as the value you type in the taxtbox
 
        Dim rowIndex As Integer = CInt(TextBox1.Text)
        Dim check As DataGridViewCheckBoxCell = TryCast(Me.DataGridView1.Rows(rowIndex).Cells(2), DataGridViewCheckBoxCell)
        If check IsNot Nothing Then
            check.Value = True
        End If
    End Sub

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nikolaoskAuthor Commented:
thanks.
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