vbnet数据库更新数据库
很慢。根据查询vbnet相关资料得知，vbnet更耐稿铅新sql数据库速度是很慢的。vbnet的sql语昌好句能查询到库中的数据，敬仿但是速度是相当的慢。
⑵ VB.NET，将数据从dataset中删除了，如何更新到数据库
需要声明使用CommandBuilder对象猛源，你是 SQL 数据库还是 ACCESS 数据库，这两者的对象不一样的团知昌。
对于：SQL server
Dim Mybuilder As SqlCommandBuilder = New SqlCommandBuilder(da)
da.Update(dt) '塌扒使用Update方法实现更新到数据库
对于：ACCESS
Dim Mybuilder As OleDbCommandBuilder = New OleDbCommandBuilder(da)
da.Update(dt) '使用Update方法实现更新到数据库
⑶ VB.NET access数据库更新语句怎么写
SQL语句：
"update人事set[年龄]=[年龄]-1where身份证='"&TxtID.Text&"'"
⑷ vb.net中向数据库写入数据后如何更新（急，在线等）
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim shkcode1 As String
Dim shimei1 As String
Dim inymd1 As String
Dim sqlstr As String
' Dim dr As DataRow
shkcode1 = DataGridView1.Rows(4).Cells(0).Value
shimei1 = DataGridView1.Rows(4).Cells(1).Value
inymd1 = DataGridView1.Rows(4).Cells(2).Value
sqlstr = " insert into EA_M1施设职员(shkcode,shimei,inymd) values ('" & shkcode1 & "','" & shimei1 & "','" & inymd1 & "')"
Dim connection As New OracleConnection("连接字符串")
Dim cmd As New OracleCommand(sqlstr, connection)
Try
connection.Open()
Dim rows As Integer = cmd.ExecuteNonQuery()
if rows > 0 then
'说明执行成功了.可以做之后的操作
end if
Catch E As System.Data.OracleClient.OracleException
connection.Close()
Throw New Exception(E.Message)
End Try
end sub
ps:建议去学学ADO.Net 不难的.
⑸ VB.NET用UpdateCommand更新数据库
Try
objconn.Open()
Dim dt As New DataTable
Dim strsql = "select * from Info"搜洞
objadap.SelectCommand = New OleDb.OleDbCommand(strsql, objconn)
objadap.Fill(objDSet, "Info")
objDSet.Clear()
Dim cmdbuilder As New OleDb.OleDbCommandBuilder(objadap)
objadap.UpdateCommand = cmdbuilder.GetUpdateCommand()
‘此庆中处修改数据
objadap.Update(objDSet.Tables("Info"))
objconn.Close()
MsgBox("保存成功", , "提示"誉漏山) '******
Catch ex As Exception
MsgBox(Err.Description, MsgBoxStyle.Critical, Err.Number)
End Try