在运行时不显示在dgv中的数据录入SQL Server CE数据库

Question

我有一个SQL Server CE数据库与表名记录和22列，并在我的形式在vb.net我有19个文本框和3个日期时间选择器为每个各自的文本框，还有一个绑定的dgv，我从我的表的查询中拖动。

当我运行程序和数据输入到文本框，然后点击保存保存“记录保存”作为编程，但在我的DGV

这里没有显示我的代码的消息：

Imports System 
Imports System.Data 
Imports System.Data.SqlServerCe 

Public Class Form1 
    Dim Cmd As SqlCeCommand 
    Dim con As SqlCeConnection 
    Dim affector As Integer 

    Dim ConnectionString As String = ("Data Source=C:\Users\chinedu\documents\visual studio 2010\Projects\GUU SPECIALIST HOSPITAL 2\GUU SPECIALIST HOSPITAL 2\Database1.sdf") 

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
     'TODO: This line of code loads data into the 'Database1DataSet.PATIENT_RECORD' table. You can move, or remove it, as needed.' 
    Dim strconnection As String = ("Data Source=C:\Users\chinedu\documents\visual studio 2010\Projects\GUU SPECIALIST HOSPITAL 2\GUU SPECIALIST HOSPITAL 2\Database1.sdf") 

Try 
     con = New SqlServerCe.SqlCeConnection("strconnection") 
     Dim sql As SqlServerCe.SqlCeCommand = New SqlServerCe.SqlCeCommand("Query", con) 
     con.Open() 
     If con.State = ConnectionState.Closed Then 
      MessageBox.Show("Database has failed to connect. System will now terminate.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information) 
      End 
     Else 
      Exit Sub 
     End If 
    Catch 
     MsgBox("Connection Established") 
    End Try 
End Sub 

'save button' 
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnSave.Click 
    Try 
     con = New SqlCeConnection(ConnectionString) 
     con.Open() 
     sCommand = New SqlCeCommand("INSERT INTO RECORD([Patient_name],[Patient_Address],[Patient_Date_Of_Birth],[Patient_Phone Number],[Patient_CardNO],[Blood_Group],[Date_Admitted],[Date_Discharged],[Treatment1],[Treatment2],[Treatment3],[Treatment4],[Treatment5],[Treatment6],[Price_Unit1],[Price_Unit2],[Price_Unit3],[Price_Unit4],[Price_Unit5],[Price_Unit6],[Sub_total],[VAT],[Prev_bal],[Net_Total]) values ('" + Patient_AddressTextBox.Text + "','" + Patient_AddressTextBox.Text + "','" + Patient_Date_Of_BirthDateTimePicker.Value.Date + "','" + Phone_NumberTextBox.Text + "','" + Hospital_NumberTextBox.Text + "','" + Blood_Group_TextBox.Text + "','" + Date_AdmittedDateTimePicker.Value.Date + "','" + Date_DischargedDateTimePicker.Value.Date + "','" + Treatment1TextBox.Text + "','" + Treatment2TextBox.Text + "','" + Treatment3TextBox.Text + "','" + Treatment4TextBox.Text + "','" + Treatment5TextBox.Text + "','" + Treatment6TextBox.Text + "','" + Sub_TotalTextBox.Text + "','" + VATTextBox.Text + "','" + Previous_BalTextBox.Text + "','" + Net_TotalTextBox.Text + "',)", con) 
     affector = sCommand.ExecuteNonQuery 
    Catch 
     MessageBox.Show("New record has been saved.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information) 
    End Try 
End Sub 

Private Sub BtnRecord_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnRecord.Click 
    strcon = ("Data Source= C:\Users\chinedu\documents\visual studio 2010\Projects\GUU SPECIALIST HOSPITAL 2\GUU SPECIALIST HOSPITAL 2\Database1.sdf") 
    con = New SqlCeConnection(strcon) 
    Dim query As String = " SELECT * from Records" 
    Dim adpt As New SqlCeDataAdapter(query, con) 
    Dim ds As New Database1DataSet() 
    adpt.Fill(ds, "Records") 
    RecordsDataGridView.DataSource = ds.Tables(0) 

Answer 1

您需要DataBind()你的GridView

在你BtnRecord_Click事件应该是这样的

RecordsDataGridView.DataSource = ds.Tables(0) 
RecordsDataGridView.DataBind() `This is your missing line. 

也可以在添加新记录后自动加载。 只需将这两行添加到您的Button4_Click事件