DataSource Controls :: Updating Database With Gridview Control

Nov 30, 2010

I am sure I am not the first to ask this question but I cannot find an answer in these or any other forums. I guess I am not wording the question right. In short I have a gridview populated but a database via an SQLDatasource. I have an Edit column in the datagrid and an updatequery in the datasource. When the Edit is click the line goes into edit mode, the user then clicks Update and I get an error. Could not find control 'DropDownList1' in ControlParameter 'Frequency'. The only complication is that there is a drop down control when the "EDIT" column is selected. The dropdownlist gets it list from another SQLDatasource. This all works fine. Here is the code snip:

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateEditButton="True"

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I have this code:

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<asp:ControlParameter ControlID="tbSqmeters" PropertyName="Text" Name="sqmeters" Type="String" />
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<asp:ControlParameter ControlID="tbPersparty" PropertyName="Text" Name="persparty" Type="String" />
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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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[code]....

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<asp:BoundField DataField="CLASS" HeaderText="CLASS" SortExpression="CLASS" />
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<asp:ListItem></asp:ListItem>
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<asp:ControlParameter ControlID="DropDownList1" Name="schcd"
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[Code] ....

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