Export to excel giving error

Question

Hi,
Export to excel functionality gives an alert saying "File you are saving/opening is not in proper format". Is there any solution for this?

Answer 1

My Command button
<af:commandButton text="Export to Excel" id="exportExcel"
inlineStyle="text-align:right;">
<af:exportCollectionActionListener exportedId="t1"
type="excelHTML"/>
My Table:-
<af:table value="#{SumBean.pagedList}" var="row"
rowBandingInterval="0" id="t1"
inlineStyle="width:700px; height:600px;"
width="1593">
<af:column sortable="true" sortProperty="--" headerText="CP" align="start"
id="c18">
<af:outputText value="#{row.Cp}" id="ot16"/>
</af:column>
<af:column sortable="false" headerText="Fwr#" align="start"
id="c13">
<af:outputText value="#{row.fId}" id="ot8"/>
</af:column>
<af:column sortable="false" headerText="Activity"
align="start" id="c8">
<af:outputText value="#{row.Type}"
id="ot17"/>
</af:column>
<af:column sortable="false" headerText="MF"
align="start" id="c7">
<af:menuBar id="mb4">
<af:outputText value="#{row.Name}"
id="ot1"/> ,
<af:outputText value="#{row.Code}" id="ot7"/>
</af:menuBar>
</af:column>
</af:table>
Windows 7
Jdeveloper version:- Jdev11g Release-1