Imports System.Data.SqlClient
Public Class Form1
    Private Conne As SqlConnection = New SqlConnection("Data Source=SWPDM\SWPDM;Initial Catalog=master;Integrated Security=True")
    Private Sub adddate()
        Dim cmd As SqlCommand
        Dim cmdstring As String = ("insert CustomTemp(名称，规格，材料) value （" + CStr(TextBox1.Text) + ",'" + TextBox2.Text + ",'" + TextBox3.Text + ",")
        cmd = New SqlCommand(cmdstring, Conne)
        Conne.Open()
        cmd.ExecuteNonQuery()
        Conne.Close()


    End Sub
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        adddate()


    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        TextBox1.Text = ""
        TextBox2.Text = ""
        TextBox3.Text = ""
    End Sub
End Class

Dim cmdstring As String = ("insert into CustomTemp(名称，规格，材料) value （'" + CStr(TextBox1.Text) + "','" + TextBox2.Text + "','" + TextBox3.Text + "'")

非常感谢！