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Delete images in TempImageFolder

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Chart (Obsolete)

This is a migrated thread and some comments may be shown as answers.

Jun Ting asked on 19 Apr 2010, 12:21 PM

Hi,

How to automatically delete the images in TempImageFolder? Is there any setting for it?

Here is the code that i used. But the images still keep in the TempImageFolder after few days.

    
              <telerik:RadChart ID="RadChart_Overall" runat="server" Width="450px"    
        
                        IntelligentLabelsEnabled="True" DefaultType="Pie" AutoLayout="True" AutoTextWrap="True" Height="350px" TempImagesFolder="~/images/articles" UseSession="False" OnItemDataBound="RadChart_Overall_ItemDataBound" SeriesPalette="MyPalette">  
        
                         <Series> 
        
                            <telerik:ChartSeries Name="Series" Type="Pie" DataYColumn="cnt">  
        
                              <appearance centerxoffset="-50" barwidthpercent="5">  
        
                                    <textappearance autotextwrap="True" textproperties-color="Black">  
        
                                    </textappearance>   
        
                                </appearance> 
        
                            </telerik:ChartSeries> 
        
                        </Series> 
        
                          <CustomPalettes> 
        
                                            <telerik:Palette Name="MyPalette">  
        
                                                <Items> 
        
                                                 <telerik:PaletteItem MainColor="DarkGreen" SecondColor="DarkGreen" /> 
        
                                                   <telerik:PaletteItem MainColor="LightBlue" SecondColor="LightBlue" /> 
        
                                                    <telerik:PaletteItem MainColor="Crimson"  SecondColor="Crimson" /> 
        
                                                    <telerik:PaletteItem MainColor="DarkOrange" SecondColor="DarkOrange"  /> 
        
                                                     <telerik:PaletteItem MainColor="MediumPurple" SecondColor="MediumPurple" /> 
        
                                                      <telerik:PaletteItem MainColor="Yellow" SecondColor="Yellow" /> 
        
                                                      <telerik:PaletteItem MainColor="PeachPuff" SecondColor="PeachPuff" /> 
        
                                                      <telerik:PaletteItem MainColor="Brown" SecondColor="white" /> 
        
                                                </Items> 
        
                                            </telerik:Palette> 
        
                                        </CustomPalettes> 
        
                                            <charttitle> 
        
                            <textblock> 
        
                                <appearance textproperties-color="Black" textproperties-font="Arial, 10pt,style=bold">  
        
                                </appearance> 
        
                            </textblock> 
        
                            <appearance position-alignedposition="TopLeft" Dimensions-Width="450px">  
        
                            </appearance> 
        
                        </charttitle> 
        
                        <PlotArea> 
        
                    <xaxis> 
        
                           <appearance color="76, 255, 255, 255" majortick-color="179, 255, 255, 255">  
        
                               <majorgridlines color="179, 255, 255, 255" width="2" /> 
        
                               <textappearance textproperties-color="Black">  
        
                               </textappearance> 
        
                           </appearance> 
        
                           <axislabel> 
        
                               <appearance dimensions-paddings="1px, 1px, 10%, 1px">  
        
                               </appearance> 
        
                               <textblock> 
        
                                   <appearance textproperties-color="Black">  
        
                                   </appearance> 
        
                               </textblock> 
        
                           </axislabel> 
        
                       </xaxis> 
        
                         <Appearance Border-Width="0" Dimensions-AutoSize="true">  
        
                        <fillstyle maincolor="" secondcolor="Transparent">  
        
                        </fillstyle> 
        
                         </Appearance> 
        
                   </PlotArea> 
        
                    <legend visible="true">  
        
                          <appearance visible="true"   
        
                                location="InsidePlotArea" dimensions-margins="2px, 2px, 2px, 3px"   
        
                                position-alignedposition="Right" position-auto="True" > 
        
                               <itemtextappearance autotextwrap="True" textproperties-color="Black"></itemtextappearance> 
        
                                <fillstyle maincolor="37, 255, 255, 255">  
        
                                </fillstyle> 
        
                                <border color="White" /> 
        
                            </appearance> 
        
                            <textblock><appearance autotextwrap="True" position-alignedposition="Top"   
        
                                textproperties-color="220, 158, 119">  
        
                            </appearance></textblock>  
        
                        </legend> 
        
                        </telerik:RadChart>

3 Answers, 1 is accepted

answered on 03 Jun 2010, 10:53 AM

Hello Jun Ting,

One reason they might not get deleted is if there are no sufficient permissions.

Another case - a bit more complicated may be the following:
1) The chart control gets loaded and rendered. (thus generating the image file)
2) However, the browser has turn off the option to load images, or some plugin is blocking the download.
3) As a consequence from (2) the HTTP Handler never loads up and deletes the image from disk.

If this becomes a problem I suggest using the Session to store images.

Kind regards,
Vladimir Milev
the Telerik team

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