findcontrol

Finding user control in TemplateField of DetailsView

由 寵の児 提交于 2019-11-29 15:43:48
I have a DetailsView that I'm posting back - and inside of that is a UserControl. I'm having some difficulty located it in the postback data. As an example: <asp:DetailsView ID="dvDetailsView" runat="Server" AutoGenerateRows="false"> <Fields> <asp:TemplateField> <ItemTemplate> Some text here </ItemTemplate> <EditItemTemplate> <uc:UserControl ID="ucUserControl" runat="server" /> </EditItemTemplate> <InsertItemTemplate> <uc:UserControl ID="ucUserControl" runat="server" /> </InsertItemTemplate> </asp:TemplateField> </Fields> </asp:DetailsView> When I postback, I would assume I would do something

FindControl() return null

由 自作多情 提交于 2019-11-29 15:08:18
I trying to create application whad add controlls dynamicaly. I have masterpage, my asp:Content is here: <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <asp:ScriptManager ID="scriptManager1" runat="server"> </asp:ScriptManager> <div style="margin: 10px"> <asp:UpdatePanel ID="updatePanel1" runat="server"> <ContentTemplate> <asp:PlaceHolder runat="server" ID="myPlaceHolder" /> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="btnAdd" EventName="Click" /> </Triggers> </asp:UpdatePanel> </div> <asp:Button ID="btnAdd" runat="server" Text="Add" />

asp.net FindControl Recursively

由 依然范特西╮ 提交于 2019-11-29 14:31:35
This is a really weird one - I will do my best to explain. I have a basic master page: <%@ Master Language="VB" CodeFile="MasterPage.master.vb" Inherits="master_MasterPage" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <asp:ContentPlaceHolder ID="head" runat="server"> </asp:ContentPlaceHolder> </head> <body> <form id="form1" runat="server"> <div> <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"> </asp:ContentPlaceHolder>

FormView.FindControl(): object reference error

由 蹲街弑〆低调 提交于 2019-11-29 11:59:00
I have a formview that has several textboxes inside of tr/td's. I'm trying to get the textboxes by using the .FindControl method but it's coming back null. The FormView is always in Edit mode (so I'm always in the EditItemTemplate) and i'm trying to load querystring values into the textboxes coming from the previous page so I do need this to happen on page_load. I do this on Gridviews all the time like this: txtFirstName = (TextBox)fvGeneralInfo.FindControl("txtFirstName"); or like this: txtFirstName = (TextBox)fvGeneralInfo.FooterRow.FindControl("txtFirstName"); or like this: txtFirstName =

can't find control in FormView?

由 本秂侑毒 提交于 2019-11-29 11:55:35
I need find this <a> tag resided in a FormView control, I need to remove this a tag depending on the condition but I can't find it using FormView.FindControl method <asp:UpdatePanel ID="upDiscipline" runat="server"> <ContentTemplate> <asp:FormView ID="fvMediaIntro" runat="server"> <ItemTemplate> <div class="clipControls"> <a runat="server" id="iNeedToFindThis" href="#">here</a> </div> </ItemTemplate> </ContentTemplate> </asp:UpdatePanel> I tried fvMediaIntro.FindControl() and fvMediaIntro.Row.FindControl() , neither worked. Any idea please?? FindControl will work only after those controls are

FormView.FindControl() returns null until DataBind()

由 故事扮演 提交于 2019-11-29 11:54:09
Why method FindControl() returns null on FormView until call DataBind() . After that it returns everything correctly? What workaround are there? Call DataBind() before first call of FindControl() ? Either explicitly call DataBind(), or place your code in the DataBound event of the FormView. How would a FormView have any information about its content before it has any data to build it upon? So I guess you already answered your own question, you will have to DataBind() before. It has nothing to do with BINDING. One is looking for SERVER CONTROL, not for ITS BOUND DATA. SO - control should be

Using FindControl to get GridView in a Content Page

由 喜你入骨 提交于 2019-11-28 10:22:18
问题 I would like to find a GridView Control within a separate class and I am having issues doing so. I even tried placing my code in the aspx.cs page to no avail. I keep getting Object reference not set to an instance of an object. I'm sure there is a simple step I'm missing, but in my research I cannot seem to find anything. Aspx code <asp:GridView ID="GridView1" EnableViewState="true" runat="server" BackColor="White" BorderColor="#CC9966" BorderStyle="None" BorderWidth="1px" CellPadding="4"

FindControl() return null

由 China☆狼群 提交于 2019-11-28 08:40:56
问题 I trying to create application whad add controlls dynamicaly. I have masterpage, my asp:Content is here: <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <asp:ScriptManager ID="scriptManager1" runat="server"> </asp:ScriptManager> <div style="margin: 10px"> <asp:UpdatePanel ID="updatePanel1" runat="server"> <ContentTemplate> <asp:PlaceHolder runat="server" ID="myPlaceHolder" /> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="btnAdd" EventName=

FormView.FindControl(): object reference error

由 爷，独闯天下 提交于 2019-11-28 05:10:00
问题 I have a formview that has several textboxes inside of tr/td's. I'm trying to get the textboxes by using the .FindControl method but it's coming back null. The FormView is always in Edit mode (so I'm always in the EditItemTemplate) and i'm trying to load querystring values into the textboxes coming from the previous page so I do need this to happen on page_load. I do this on Gridviews all the time like this: txtFirstName = (TextBox)fvGeneralInfo.FindControl("txtFirstName"); or like this:

FormView.FindControl() returns null until DataBind()

由 微笑、不失礼 提交于 2019-11-28 05:09:17
问题 Why method FindControl() returns null on FormView until call DataBind() . After that it returns everything correctly? What workaround are there? Call DataBind() before first call of FindControl() ? 回答1: Either explicitly call DataBind(), or place your code in the DataBound event of the FormView. 回答2: How would a FormView have any information about its content before it has any data to build it upon? So I guess you already answered your own question, you will have to DataBind() before. 回答3: It
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