net + sql server

.NET + SQL SERVER

SQL Server +SP4

確定加入六個參考

DataGrid

Button2

DataGrid

SQL Server Connection DataAdapter DataSetCommand DataGrid

code

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim cn As System.Data.SqlClient.SqlConnection ' 宣告 connection 物件 Dim cmd As System.Data.SqlClient.SqlCommand ' 宣告 command 物件 Dim da As System.Data.SqlClient.SqlDataAdapter ' 宣告 dataadapter 物件

' 建立與 SQL Server 資料庫的連線 ' 產生 connection 物件 cn = New System.Data.SqlClient.SqlConnection("uid=rcjao;pwd=rcjao;database=rcjao;server=MYCHAT-57ED6516") ' 產生 command 物件 cmd = New System.Data.SqlClient.SqlCommand("select * from myname", cn) ' 產生 dataadapter 物件 da = New System.Data.SqlClient.SqlDataAdapter(cmd) ' 加入新的資料表 ' 宣告並產生 datatable 物件 Dim dt As System.Data.DataTable = New System.Data.DataTable("myname")

da.Fill(dt)

DataGrid1.DataSource = dt End Sub

Imports System.dataImports System.Data.SqlClient

部署與執行

部署與執行－使用模擬器

部署與執行－使用 PDA

請注意 PDA 畫面上的訊息程式並未真正安裝到 PDA 上面

部署至 PDA

建置封包檔

畫面會閃動建置封包檔

建置封包檔－適合各種 PDA

安裝封包檔

點選執行

依照機型複製 .CAB 檔案到 PDA 上

執行封包檔

表單顯示與切換

建立新表單

表單方法Close－關閉表單Hide －隱藏表單Show －顯示表單

‘ Form1 呼叫顯示 Form2 Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim myfrm2 As New Form2 myfrm2.Show() End Sub

.NET + SQL CE

由 SQL Server 下載資料


Module Module1 Public strremoteconnect As String ' SQL Server 連接設定 Public localconnect As String ' sdf 檔案位置設定End Module

由 SQL Server 下載資料Imports System.Data.SqlServerCeImports System.DataImports System.Data.SqlClient

加入 SQLCE 參考

Form2


Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click ' 跳頁到 FORM2 Dim myfrm2 As New Form2 myfrm2.Show() End Sub

Form1

Button3


設定 SQL Server 連接參數 (strremoteconnect)設定 PDA 上 SDF 檔案位置 (localconnect)

Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load strremoteconnect = "provider=sqloledb;data source=192.168.2.2;Initial Catalog=wealth1;UID=mywealth;password=mywealth" localconnect = "Data Source=\My Documents\wealth1.sdf“End Sub

Form2

由 SQL Server 下載資料Form2

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click ‘ 需要 Imports System.IO ，檢查 sdf 資料庫是否存在 If System.IO.File.Exists("\My Documents\wealth1.sdf") Then System.IO.File.Delete("\My Documents\wealth1.sdf") End If ' 改變游標形狀 System.Windows.Forms.Cursor.Current = System.Windows.Forms.Cursors.WaitCursor ‘-------------------------- 建立資料庫 Dim eng As SqlCeEngine = New SqlCeEngine(localconnect) eng.CreateDatabase() ' 恢復油標形狀 System.Windows.Forms.Cursor.Current = System.Windows.Forms.Cursors.Default MsgBox(" 資料庫建立成功 ") End Sub


Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click ' 下載資料 Dim strSQL As String = "SELECT * FROM goods" Dim rda As SqlCeRemoteDataAccess = Nothing Try rda = New SqlCeRemoteDataAccess rda.InternetUrl = “http://192.168.2.2/rda/sscesa20.dll” ‘ ㄧ定要指定固定且確定的 ip rda.LocalConnectionString = "Provider=Microsoft.SQLSERVER.OLEDB.CE.2.0;Data Source=\My Documents\wealth1.sdf" rda.Pull("goods", strSQL, strremoteconnect, RdaTrackOption.TrackingOnWithIndexes, "ErrorTable") MsgBox(" 資料下載成功 ") Catch ex As SqlCeException MsgBox(ex.Message.ToString) Finally rda.Dispose() End Try End Sub


Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim dt As System.Data.DataTable = New System.Data.DataTable("goods") Dim cn As New System.Data.SqlServerCe.SqlCeConnection Dim cmd As New System.Data.SqlServerCe.SqlCeCommand Dim da As New System.Data.SqlServerCe.SqlCeDataAdapter ‘ 開啟 sdf 連線 Try cn = New System.Data.SqlServerCe.SqlCeConnection("Data Source=\My Documents\wealth1.sdf") ‘ 使用 command 執行 sql 指令 cmd.CommandText = "SELECT * FROM goods" cmd.Connection = cn da = New System.Data.SqlServerCe.SqlCeDataAdapter(cmd) da.Fill(dt) ‘ 在 DataGrid 顯示資料 DataGrid1.Visible = False DataGrid1.DataSource = dt DataGrid1.Visible = True cn.Close() cn = Nothing Catch sqlex As SqlServerCe.SqlCeException MsgBox(sqlex.Message.ToString) Catch ex As Exception MsgBox(ex.Message.ToString) End Try End Sub


Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Close()End Sub


Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click Dim localConnection As SqlCeConnection localConnection = New SqlCeConnection(localconnect) Dim insertData As String Dim cmdCreateTable As SqlCeCommand insertData = "update goods set stuid='11111' where name='abc'" localConnection.Open() cmdCreateTable = New SqlCeCommand(insertData, localConnection) cmdCreateTable.CommandType = CommandType.Text cmdCreateTable.ExecuteNonQuery()

localConnection.Close() localConnection = Nothing MsgBox(" 修改成功 ") Call Button3_Click(0, e) ‘ 重新顯示End Sub

Convert.ToString(DataGrid1(DataGrid1.CurrentRowIndex, 0))

Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click Dim localConnection As SqlCeConnection localConnection = New SqlCeConnection(localconnect) Dim insertData As String Dim cmdCreateTable As SqlCeCommand

' 需要設定 SQL Server 上的 uniqueidentifier 的 RowGuid=true 才可以新增 insertData = "INSERT INTO goods (name,stuid) VALUES ('222ab','333ab')" localConnection.Open() cmdCreateTable = New SqlCeCommand(insertData, localConnection) cmdCreateTable.CommandType = CommandType.Text cmdCreateTable.ExecuteNonQuery()

localConnection.Close() localConnection = Nothing MsgBox(" 新增資料成功 ") End Sub


記得 sql server 的欄位一定要設定成 uniqueidentifier


Form2

Private Sub Button4_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click Dim rda As SqlCeRemoteDataAccess = Nothing Try rda = New SqlCeRemoteDataAccess rda.InternetUrl = “http://192.168.2.2/rda/sscesa20.dll” ‘ ㄧ定要指定固定且確定的 ip rda.LocalConnectionString = "Provider=Microsoft.SQLSERVER.OLEDB.CE.2.0;Data Source=\My Documents\wealth1.sdf" rda.Push("goods", strremoteconnect, RdaBatchOption.BatchingOn) MsgBox(" 資料上傳成功 ") Catch ex As SqlCeException MsgBox(ex.Message.ToString) Finally rda.Dispose() End Try End Sub