how to update, insert records through datagridview to sql using data adapter or other method in vb.net - sql

Question

hello best programmers in the world i need your expert advise and assistance with regards to my project.
I am trying to insert and update my table through datagridview by clicking a command button,
i have my datagridview properties set to editmode : editprogrammatically,
here's the code, of where i pulled up my datagridview content:
Public Sub loaddgvfrm3()
cmdconn = New SqlConnection
cmd = New SqlCommand
cmdconn.ConnectionString = sqlstr
cmdconn.Open()
cmd.Connection = cmdconn
cmd.CommandText = "select period, VOUCH_AMT, INDIVIDUAL_AMT, check_no, D_MAILED, DIR_NO from tobee.EBD_BILLHISTORY where CLAIM_NO like '" + txtClaimno.Text + "'"
Dim dt As New DataTable
da = New SqlDataAdapter
da.SelectCommand = cmd
da.Fill(dt)
Me.DataGridView1.DataSource = dt
Me.DataGridView2.DataSource = dt
cmdconn.Close()
End Sub
now i have my command buttons here
here's the add button: (im prefering to add a row within the selected table)
Private Sub btnAdd_Click(sender As Object, e As EventArgs) Handles btnAdd.Click
End Sub
here's the Edit button:
Private Sub btnEditmain_Click(sender As Object, e As EventArgs) Handles btnEditmain.Click
''Form1.ShowDialog()
'DataGridView2.AllowUserToAddRows = True
''DataGridView2.BeginEdit(True)
'btnSave.Enabled = True
End Sub
and here's the save button that should save all changes that i have done,
Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click
Dim connstr As String = "server=midtelephone\sqlexpress; database=testdb; user= sa; password=sa;"
End Sub
i left command button contents empty because i need to create a new method of inserting, updating the row. because the one that i have earlier was a fail, although it inserts the data in the sql, but not in its appropriate row, take a look at here: Data inserted from datagridview not updated in SQL Server , instead it creates another row which is not connected with '" + txtClaimno.Text + "'" (stated from above) so what happens is that it stacks a new row with no connected owner from another table(claim_no < this claim_no is connected from another table as a fk in the database but a primary key in (billhistory table))
can you pls help me get rid of this problem as i am having a hard time moving to the next phase of our project? im just a high school student, so pls bear with me :) i'll appreciate if u give comments / answers regarding my question :) thanks in adv.
my mentor advised me to use data adapter accept changes stuff, but i don't know how to implement such stuffs. pls help me thank you :)

Answer 1

Use Event to get data from gridview on cellConttent Click and these values to a query or Stored procedure.
private void grdCampaignStats_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
//I want to get value of SomeColumn of grid view having datatype String
string SomeVariabel = grd["CoulmnNameinGRID", e.RowIndex].Value.ToString();
// Make it according to Vb it is C# code
}