[英]Session variables updating, but not refreshing gridview
我有一個GridView,其中有兩個會話變量用於過濾select語句( TimeStart
和TimeFinish
)。 我有一個默認值,它們在GridView中顯示正確的信息。
我有兩個ASP TextBoxes,其TextMode設置為Time,我需要更新這些值。 這些會更新會話變量(已設置要檢查的標簽值),但未更新GridView的select語句。
我在同一頁上為另一個GridView做了相同的事情,唯一的區別是Int32中的會話變量是通過GridView的IndexChanged事件設置的,並且對於為什么它不適用於此事件感到困惑。
GridView的來源:
<asp:GridView ID="gvAvailableVets" runat="server" AutoGenerateColumns="False" DataKeyNames="VetID" DataSourceID="AvailableVetsDataSource">
<Columns>
<asp:BoundField DataField="VetID" HeaderText="VetID" ReadOnly="True" SortExpression="VetID" />
<asp:BoundField DataField="FirstName" HeaderText="FirstName" SortExpression="FirstName" />
<asp:BoundField DataField="LastName" HeaderText="LastName" SortExpression="LastName" />
<asp:BoundField DataField="MobileNumber" HeaderText="MobileNumber" SortExpression="MobileNumber" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="AvailableVetsDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:VetPracticeConnectionString %>" SelectCommand="SELECT DISTINCT Veternarians.VetID, FirstName, LastName, MobileNumber FROM dbo.Veternarians
INNER JOIN dbo.VetHours
ON Veternarians.VetID = VetHours.VetID
INNER JOIN dbo.Appointments
ON Veternarians.VetID = Appointments.VetID
WHERE @beginTime > VetHours.StartTime
AND @endTime < VetHours.EndTime
AND (@beginTime > Appointments.EndTime
OR @endTime < Appointments.BeginTime) ">
<SelectParameters>
<asp:SessionParameter DefaultValue="9:00" Name="beginTime" SessionField="TimeStart" Type="String" />
<asp:SessionParameter DefaultValue="10:00" Name="endTime" SessionField="TimeFinish" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
TextBoxes的C#代碼后面:
protected void txtTimeBegin_TextChanged(object sender, EventArgs e) {
Session["TimeStart"] = txtTimeBegin.Text;
// Used for debugging
lblDebug.Text = Session["TimeStart"].ToString();
}
protected void txtTimeEnd_TextChanged(object sender, EventArgs e) {
Session["TimeFinish"] = txtTimeEnd.Text;
}
當任何textbox
值更改時,嘗試重新綁定Gridview
。
protected void txtTimeBegin_TextChanged(object sender, EventArgs e)
{
Session["TimeStart"] = txtTimeBegin.Text;
gvAvailableVets.DataBind();
// Used for debugging
lblDebug.Text = Session["TimeStart"].ToString();
}
protected void txtTimeEnd_TextChanged(object sender, EventArgs e)
{
Session["TimeFinish"] = txtTimeEnd.Text;
gvAvailableVets.DataBind();
}
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