Question

我遇到了麻烦。我有一个datagridview，显示了来自数据库sql server的所有数据。但是当我尝试在datagridview中插入并保存新行一个或多个数据时，数据库datagridview中显示的前一个插入数据会再次插入我的新行数据。

我只想插入并保存新的行数据，而不是我以前的数据。请帮帮我！

Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click
    cmd = New SqlCommand("Insert into DataSK values (@NIK, @Name, @Address, @Email, @Status)", con)
    cmd.Parameters.Clear()

    cmd.Parameters.Add("@NIK", SqlDbType.VarChar, 20).Value = dgv.Rows(row).Cells("NIK").Value
    cmd.Parameters.Add("@Name", SqlDbType.VarChar, 50).Value = dgv.Rows(row).Cells("Name").Value
    cmd.Parameters.Add("@Address", SqlDbType.VarChar, 50).Value = dgv.Rows(row).Cells("Address").Value
    cmd.Parameters.Add("@Email", SqlDbType.Char, 50).Value = dgv.Rows(row).Cells("Email").Value
    cmd.Parameters.Add("@Status", SqlDbType.VarChar, 10).Value = dgv.Rows(row).Cells("Status").Value

    cmd.ExecuteNonQuery()
End Sub

Answer 1

这样的事情可以帮助你。

Imports System.Data.SqlClient
Public Class Form1
    Dim connetionString As String
    Dim connection As SqlConnection
    Dim adapter As SqlDataAdapter
    Dim cmdBuilder As SqlCommandBuilder
    Dim ds As New DataSet
    Dim changes As DataSet
    Dim sql As String
    Dim i As Int32

    Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        connetionString = "Data Source=ServerName;Initial Catalog=YourDatabaseName;Trusted_Connection=True;"
        connection = New SqlConnection(connetionString)
        sql = "Select * from Products"
        Try
            connection.Open()
            adapter = New SqlDataAdapter(Sql, connection)
            adapter.Fill(ds)
            DataGridView1.DataSource = ds.Tables(0)
            connection.Close()
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub

    Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        'NOTE:  for this code to work, there must be a PK on the Table
        Try
            cmdBuilder = New SqlCommandBuilder(adapter)
            changes = ds.GetChanges()
            If changes IsNot Nothing Then
                adapter.Update(changes)
            End If
            MsgBox("Changes Done")
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub
End Class

如何将多个数据从gridview插入数据库，其中gridview中数据库中显示的数据不会再次保存

1 个答案: