Forms Data Controls :: Get The Value Of Control Before Updating In Gridview?

Jul 9, 2010

I am using fileuploader control in gridview template control's edittemplate but the problem is when i press edit button fileuploader control and update other controls such as textboxes and press update button there is no value for Fileuploader control so i need the value of image control that is in itemtemplate so i pass it as a parameter.

here is my code

<asp:GridView CssClass="mGrid" ID="grdviewAvailForum"
runat="server" AutoGenerateColumns="False"
DataSourceID="objDtsrcAddForum" DataKeyNames="ForumID" [code]....

now here in else i need the old values,how i can get it.

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Forms Data Controls :: Gridview Updating - Could Not Find Control 'tbDescriptiontext' In ControlParameter 'descriptiontext'?

Sep 21, 2010

I have this code:

<asp:GridView ShowFooter="true" DataSourceID="odsRooms" Width="700" DataKeyNames="id,locationid" ID="gvRooms" GridLines="None" PageSize="10" runat="server" AllowSorting="true" AllowPaging="True" CellSpacing="4" AutoGenerateColumns="False" >
<Columns>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left" HeaderStyle-VerticalAlign="Bottom" >
<ItemTemplate>
<%# Eval("roomname")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbRoomname" MaxLength="20" Text='<%# Eval("roomname")%>' runat="server" />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left" HeaderStyle-VerticalAlign="Bottom">
<ItemTemplate>
<%# Eval("sqmeters")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbSqmeters" MaxLength="6" Width="60" Text='<%# Eval("sqmeters")%>' runat="server" />
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</asp:TemplateField>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left" >
<ItemTemplate>
<%# Eval("persreception")%>
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<EditItemTemplate>
<asp:TextBox ID="tbPersreception" MaxLength="6" Width="60" Text='<%# Eval("persreception")%>' runat="server" />
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</asp:TemplateField>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left" HeaderStyle-VerticalAlign="Bottom" >
<ItemTemplate>
<%# Eval("persdiner")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbPersdiner" Text='<%# Eval("persdiner")%>' MaxLength="6" Width="60" runat="server" />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left" HeaderStyle-VerticalAlign="Bottom" >
<ItemTemplate>
<%# Eval("persparty")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbPersparty" Text='<%# Eval("persparty")%>' MaxLength="6" Width="60" runat="server" />
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</asp:TemplateField>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left" HeaderStyle-VerticalAlign="Bottom" >
<ItemTemplate>
<%# Eval("descriptiontext")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbDescriptiontext" Text='<%# Eval("descriptiontext")%>' TextMode="MultiLine" Rows="2" Columns="28" runat="server" />
</EditItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="true" DeleteText="Delete" ShowEditButton="true" EditText="Edit" CancelText="Cancel" />
</Columns>
</asp:GridView>
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<DeleteParameters>
<asp:Parameter Name="id" Type="Int32" />
</DeleteParameters>
<UpdateParameters>
<asp:ControlParameter ControlID="tbRoomname" PropertyName="Text" Name="roomname" Type="String" />
<asp:ControlParameter ControlID="tbSqmeters" PropertyName="Text" Name="sqmeters" Type="String" />
<asp:ControlParameter ControlID="tbPersreception" PropertyName="Text" Name="persreception" Type="String" />
<asp:ControlParameter ControlID="tbPersdiner" PropertyName="Text" Name="persdiner" Type="String" />
<asp:ControlParameter ControlID="tbPersparty" PropertyName="Text" Name="persparty" Type="String" />
<asp:ControlParameter ControlID="tbDescriptiontext" PropertyName="Text" Name="descriptiontext" Type="String" />
<asp:Parameter Name="id" Type="Int32" />
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And get this error when I click 'Edit' and then 'Update':

Server Error in '/' Application. Could not find control 'tbDescriptiontext' in ControlParameter 'descriptiontext'.Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Could not find control 'tbDescriptiontext' in ControlParameter 'descriptiontext'.

Source Error:

[Code]....

Stack Trace:

[Code]....

[InvalidOperationException: Could not find control 'tbDescriptiontext' in ControlParameter 'descriptiontext'.]
System.Web.UI.WebControls.ControlParameter.Evaluate(HttpContext context, Control control) +2961386
System.Web.UI.WebControls.Parameter.UpdateValue(HttpContext context, Control control) +152
System.Web.UI.WebControls.ParameterCollection.UpdateValues(HttpContext context, Control control) +113
System.Web.UI.WebControls.ParameterCollection.GetValues(HttpContext context, Control control) +47
System.Web.UI.WebControls.ObjectDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) +1204
System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +3636597
System.Web.UI.WebControls.GridView.HandleUpdate(GridViewRow row, Int32 rowIndex, Boolean causesValidation) +1336
System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +641
System.Web.UI.WebControls.GridViewRow.OnBubbleEvent(Object source, EventArgs e) +164
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +52
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3691

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

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Font-Names="Arial"
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[Code]....

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[Code]....

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