更新面板的GridView更新不及時

Question

當我點擊按鈕數據在數據庫更新的提交，但它不是在GridView中列出

<form id="form1" runat="server"> 
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> 
<div> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="True"><ContentTemplate> 
    <fieldset style="border: thin dotted #000000; height:919px;width:70%;background-color:#999999;"><legend style="font-size:15px;color:rgb(255,255,255);">Registration</legend><div>  <asp:TextBox ID="txtcode" runat="server" CssClass="textbox" placeholder="Code"></asp:TextBox> </div> <br /><div><asp:TextBox ID="txtabr" runat="server" CssClass="textbox" placeholder="AER"></asp:TextBox> </div><br /> <div><asp:TextBox ID="txtauthor" runat="server" CssClass="textbox" placeholder="Author"></asp:TextBox></div><br /><div><asp:TextBox ID="txtEmail" runat="server" CssClass="textbox" placeholder="Email"></asp:TextBox</div><br /><div> 
    <asp:TextBox ID="txtpublishdate" runat="server" CssClass="textbox" placeholder="PublishDate"></asp:TextBox> 
    <asp:ImageButton ID="ImageButton1" runat="server" BorderColor="#9900FF" 
     onclick="ImageButton1_Click" style="width: 14px" 
     /> 
    <asp:Calendar ID="Calendar1" runat="server" BackColor="White" 
     BorderColor="Black" DayNameFormat="Shortest" Font-Names="Times New Roman" 
     Font-Size="10pt" ForeColor="Black" Height="220px" NextPrevFormat="FullMonth" 
     TitleFormat="Month" Width="400px" onselectionchanged="Calendar1_SelectionChanged" 
     > 
     <DayHeaderStyle BackColor="#CCCCCC" Font-Bold="True" Font-Size="7pt" 
      ForeColor="#333333" Height="10pt" /> 
     <DayStyle Width="14%" /> 
     <NextPrevStyle Font-Size="8pt" ForeColor="White" /> 
     <OtherMonthDayStyle ForeColor="#999999" /> 
     <SelectedDayStyle BackColor="#CC3333" ForeColor="White" /> 
     <SelectorStyle BackColor="#CCCCCC" Font-Bold="True" Font-Names="Verdana" 
      Font-Size="8pt" ForeColor="#333333" Width="1%" /> 
     <TitleStyle BackColor="Black" Font-Bold="True" Font-Size="13pt" 
      ForeColor="White" Height="14pt" /> 
     <TodayDayStyle BackColor="#CCCC99" /> 
    </asp:Calendar></div><br /> <div> 
    <asp:TextBox ID="txtname" runat="server" CssClass="textbox" placeholder="BookName"></asp:TextBox> </div><br /><div> 
    <asp:TextBox ID="txtduedate" runat="server" CssClass="textbox" placeholder="DueDate"></asp:TextBox> 
    <asp:ImageButton ID="ImageButton2" runat="server" BorderColor="#9900FF" onclick="ImageButton2_Click" 
     /> 
    <asp:Calendar ID="Calendar2" runat="server" BackColor="White" 
     BorderColor="Black" DayNameFormat="Shortest" Font-Names="Times New Roman" 
     Font-Size="10pt" ForeColor="Black" Height="220px" NextPrevFormat="FullMonth" 
     TitleFormat="Month" Width="400px" onselectionchanged="Calendar2_SelectionChanged" 
     > 
     <DayHeaderStyle BackColor="#CCCCCC" Font-Bold="True" Font-Size="7pt" 
      ForeColor="#333333" Height="10pt" /> 
     <DayStyle Width="14%" /> 
     <NextPrevStyle Font-Size="8pt" ForeColor="White" /> 
     <OtherMonthDayStyle ForeColor="#999999" /> 
     <SelectedDayStyle BackColor="#CC3333" ForeColor="White" /> 
     <SelectorStyle BackColor="#CCCCCC" Font-Bold="True" Font-Names="Verdana" 
      Font-Size="8pt" ForeColor="#333333" Width="1%" /> 
     <TitleStyle BackColor="Black" Font-Bold="True" Font-Size="13pt" 
      ForeColor="White" Height="14pt" /> 
     <TodayDayStyle BackColor="#CCCC99" /> 
    </asp:Calendar> 
</div><div> <asp:Label ID="Label5" runat="server" Text="IsActive" CssClass="label"></asp:Label> </div> <div><asp:CheckBox ID="chkactive" runat="server" /></div><div> 
    <asp:Label ID="Label6" runat="server" Text="Status" CssClass="label"></asp:Label> </div> <div><asp:CheckBox ID="chkstactive" Text="Active" runat="server" Checked="true" /> <asp:CheckBox ID="chknotactive" Text="NotActive" runat="server" /></div><br /><div><asp:Button ID="Btnsubmit" runat="server" Text="Submit" CssClass="bluebutton" onclick="Btnsubmit_Click" /> </div></fieldset></ContentTemplate></asp:UpdatePanel> 
</div> 
<div> 

    <asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="True"><ContentTemplate> 
     <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
      BackColor="#CC33FF" BorderColor="Black" ForeColor="White"> 
      <AlternatingRowStyle BackColor="#666633" /> 
      <Columns> 
       <asp:BoundField DataField="Code" HeaderText="Code" /> 
       <asp:BoundField DataField="Author" HeaderText="Author" /> 
       <asp:BoundField DataField="AER" HeaderText="ABR" /> 
      </Columns> 
      <HeaderStyle BackColor="Black" /> 
      <RowStyle BackColor="#666699" /> 
      <SelectedRowStyle BackColor="#00FF99" /> 
     </asp:GridView> </ContentTemplate><Triggers><asp:AsyncPostBackTrigger ControlID="Btnsubmit" EventName="Click" /></Triggers> </asp:UpdatePanel>  </div> </form></body> 

數據表已成功更新，之後插入GridView控件未上市的最新記錄，如果我刷新頁面再次，數據將shown.please幫助...........

 protected void Btnsubmit_Click(object sender, EventArgs e) 
    {OleDbConnection conn = new OleDbConnection(); conn.ConnectionString =ConfigurationManager.ConnectionStrings["conn"].ToString();conn.Open();    
     string query = "insert into Register 
     (Code,Author,AER,PublishDate) values('" + txtcode.Text + "','" + 
     txtauthor.Text + "','" + txtabr.Text + "','" + txtpublishdate.Text + "')"; 
     OleDbCommand cmd = new OleDbCommand(query, conn); 
     cmd.ExecuteNonQuery(); 
     conn.Close(); 
     BindGrid(); 
     Clear(); 
    } 
    protected void BindGrid() 
    { 

Answer 1

代碼添加到您BindGrid（）方法來重新綁定d atagridview到一個新的數據。

事情是這樣的：

// Set up the data source. 
bindingSource.DataSource = GetData("Select * From Register"); 
GridView1.DataSource = bindingSource; 

Answer 2

在你BindGrid數據添加以下代碼

  con.Open(); 
 
      SqlCommand cmd = new SqlCommand("Select * from Register", con); 
 
      SqlDataAdapter da = new SqlDataAdapter(cmd); 
 
      DataSet ds = new DataSet(); 
 
      da.Fill(ds); 
 
      con.Close(); 
 
      if (ds.Tables[0].Rows.Count > 0) 
 
      { 
 
       Gridview1.DataSource = ds; 
 

 
       Gridview1.DataBind(); 
 
       UpdatePanel1.Update(); 
 
       }