I have a textbox in a gridview templatefield and I want to handle its TextChanged event. The problem is using the UpdatePanel trigger I get the following message?
A control with ID 'txtQtd' could not be found for the trigger in UpdatePanel 'UpdatePanel1'
How can I incorporate this control into updatepanel?
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:BoundField DataField="Origin" ItemStyle-Width="8%" />
<asp:BoundField DataField="Destiny" ItemStyle-Width="8%"/>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="txtQtd" AutoPostBack="true" OnTextChanged="txtQtd_TextChanged" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Factor" ItemStyle-Width="8%" />
</Columns>
</asp:GridView>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtQtd" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
what you could do is put an invisible button that calls the txtQtd_TextChanged method from javascript, that is, you put the onchange property inside the textbox and when this is executed you will call the button with document.getElementById (MainContent_btn).click();
It's just an idea
Related
I have a GridView inside of a UpdatePanel. In a template field is a CheckBox I use for marking items. Functionally, this works fine, but the CheckBox always triggers a full page postback instead of a partial postback. How do I get the CheckBox to trigger a partial postback?
<asp:GridView ID="gv_test" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="cb_View_CheckAll" runat="server" AutoPostBack="true" OnCheckedChanged="cb_View_CheckAll_CheckedChanged"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
use trigger and scriptmanager
<asp:ScriptManager ID="script" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel" runat="server">
<ContentTemplate>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="cb_View_CheckAll" />
</Triggers>
</asp:UpdatePanel>
In your ScriptManager add EnablePartialRendering="true"
<asp:ScriptManager ID="ScriptManager1" runat="server" EnableViewState="False" EnablePartialRendering="true" EnableScriptGlobalization="true" > </asp:ScriptManager>
Or in Code Behind try to add AsyncPostbackTrigger
ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(gv_test);
My project is a Asp.Net project. The code is written in vb.net.
There are file-upload and a gridview with this TemplatesField:
<asp:TemplateField HeaderText="Edit">
<ItemTemplate>
<a onserverclick="fnEditWork" class="AEditWork" href='<%#Eval("WorkID")' runat="server" id="EditWork"></a>
</ItemTemplate>
<ItemStyle Width="30px" />
</asp:TemplateField>
in this situation the file-upload works but the anchor does not fire post-back. (the 'fnEditWork' function on onserverclick does not fire.) But when I comment the file-upload code out then fnEditWork function fires.
How can I make it work?
You can do it with AJAX.
Put something like that arround it
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
</ContentTemplate>
<Triggers>
<asp:AsyncPostbackTrigger ControlID="AEditWork" EventName="onserverclick" />
</Triggers>
</asp:UpdatePanel>
I have a gridview and inside that I have below code.
<asp:TemplateField HeaderText="Header 3">
<ItemTemplate>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<!-- only your content that needs refreshing goes here -->
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row"
onclick="ButtonAdd_Click" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ButtonAdd" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</FooterTemplate>
</asp:TemplateField>
I have added update panel because when I click ButtonAdd button data in the gridview has been removed. But after I added below code button click event doesn't fire. Please suggest solution.
Please place your whole gridview inside update panel and remove update panel inside and try..
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:GridView ID="gridview1" runat="server" >
</asp:GridView>
</ContentTemplate>
<Triggers>
</Triggers>
</asp:UpdatePanel>
How do i update gridView inside UpdatePanel.
My delete button i okay. But I have to refresh page to see changes.
btn Button and litTest is for checking updatePanel.
I hope anyone can help me whats wrong...
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" EnablePartialRendering="true" runat="server">
<ContentTemplate>
<asp:Literal ID="litTest" runat="server" />
<asp:GridView
ID="GridViewBruger"
CssClass="TableSort"
runat="server"
CellPadding="4"
GridLines="Horizontal"
AutoGenerateColumns="False"
width="500"
onrowcommand="GridViewCase_RowCommand">
<Columns>
<asp:BoundField DataField="FilePath" />
<asp:BoundField DataField="File" ItemStyle-HorizontalAlign="Center" HeaderText="File" ItemStyle-Width="200px" HeaderStyle-CssClass="header"/>
<asp:BoundField DataField="Date" ItemStyle-HorizontalAlign="Center" HeaderText="Date"/>
<asp:buttonfield buttontype="Image" ItemStyle-HorizontalAlign="Center" ImageUrl="~/img/trash.png" commandname="Del" text="Slet" HeaderText="Delete"/>
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Button ID="btn" Text="testUpdatePanel" runat="server" OnClick="btn_Click" />
Thanks!!
By calling the GridViewBruger.DataBind() on code behind the GridView will be updated.
Also if you add the update button, inside the update panel, and on code behind also just call the DataBind() also the grid view will be updated.
.....
</asp:GridView>
<asp:Button ID="btn" Text="testUpdatePanel" runat="server" OnClick="btn_Click" />
</ContentTemplate>
</asp:UpdatePanel>
I have a gridview with a checkbox in first column. I set checkbox property of autopostback="true". The gridview is inside the updatepanel. When checkbox is checked i want to make one panel as visible, which panel is outside the update panel. I check the code with check point, which is go through the code, but its not working. Can any one help me?..
Thanks in advance.
My code is here for your reference...
HTML Code:
<asp:Panel ID="ploperation" runat="server" CssClass="plop" Visible="False">
<asp:LinkButton ID="lbtnasspam" runat="server" CssClass="panelbtn" Font-Names="Calibri"
Font-Size="14px" Font-Underline="False" OnClick="lbtnasspam_Click">Report As Spam</asp:LinkButton>
</asp:Panel>
<asp:UpdatePanel ID="up" runat="server">
<ContentTemplate>
<asp:GridView ID="gvmail" runat="server" AllowPaging="True" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkchild" runat="server" AutoPostBack="true" OnCheckedChanged="chkchild_CheckedChanged"/>
</ItemTemplate>
<ItemStyle Width="15px" />
</asp:TemplateField>
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
C# Code:
protected void chkchild_CheckedChanged(object sender, EventArgs e)
{
ploperation.Visible = true;
}
You can use initializeRequest - this event is raised when an asynchronous post back occurs(When you check the checkbox in your gridview it initiates an async postback because it's inside an update panel).
Just change ploperation to a div instead of <asp:Panel and you can use javascript to show/hide it:
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<script type="text/javascript">
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(initializeRequest);
function initializeRequest(sender, args) {
document.getElementById('ploperation').style.display = 'block';
}
</script>
<asp:UpdatePanel ID="up" runat="server">
<ContentTemplate>
<asp:GridView ID="gvmail" runat="server" AllowPaging="True" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkchild" runat="server" AutoPostBack="true" />
</ItemTemplate>
<ItemStyle Width="15px" />
</asp:TemplateField>
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
<div id="ploperation" style="display:none;" runat="server">
<asp:LinkButton ID="lbtnasspam" runat="server" CssClass="panelbtn" Font-Names="Calibri"
Font-Size="14px" Font-Underline="False" OnClick="lbtnasspam_Click">Report As Spam</asp:LinkButton>
</div>
</form>
Alternatively you can stick to the way you've done it, just place <asp:Panel inside UpdatePanel -> ContentTemplate
update panel does partial page loading....
check link
so if you want to show your panel than include it also in your update panel.
Put the UpdatePanel on the control you want to change, not on the GridView. Do not forget to Reference the GridView on the Triggers section. For example, if you want to change a label text use the following code:
<asp:UpdatePanel ID="up" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="gvmail" />
</Triggers>
</asp:UpdatePanel>
<asp:GridView ID="gvmail" runat="server" AllowPaging="True" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkchild" runat="server" AutoPostBack="true" OnCheckedChanged="chkchild_CheckedChanged"/>
</ItemTemplate>
<ItemStyle Width="15px" />
</asp:TemplateField>
</Columns>
</asp:GridView>