Ciao a tutti,

ho una pagina aspnet in cui compaiono textbox e pulsanti;dovrei fare in modo che

alla pressione di questi pulsanti venga messa la spunta ad alcune checkbox e non ad altre.

Vi posto la pagina per maggiore chiarezza:
codice:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="queryform.aspx.cs" Inherits="queryform" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>King Fisher  -  query by example test page</title>
    </head>
<body bgcolor="#EAE9E1" text="#000000" LANGUAGE=javascript onload="return window_onload()">
    <form id="form1" runat="server">
    <div div align="center">
    <center>
  <table border="0" cellpadding="0" cellspacing="0" width="600">
    <tr>
      <td width="198">[img]Grafica/logopiccolo.gif[/img]</td>
      <td width="398">
        <p align="right"><font face="Verdana" size="5">Query by example</font></td>
    </tr>
    <tr>
      <td colspan="2">
        <hr>



<table width="100%" border="1" bordercolor="#333333" cellpadding="5" cellspacing="0">
  <tr bgcolor="#cccccc"> 
    <td width="44%" height="28"> 
      <div align="center"><font face="Verdana, Arial, Helvetica, sans-serif">Query 
        Image </font></div>
    </td>
    <td width="56%" height="28"> 
      <div align="center"><font face="Verdana, Arial, Helvetica, sans-serif">Image
        details </font></div>
    </td>
 </tr>
  <tr> 
    <td width="44%" bgcolor="#666666" height="140"> 
      <div align="center">
      



          <asp:Image ID="image" runat="server" ImageUrl="~/File caricati/" 
               Height="150px" ImageAlign="Middle" />
        </div>
    </td>
    <td width="56%" height="140" bgcolor="#666666" valign="middle"> 
      <div align="left">
        

<font color="#CCCCCC" face="Verdana, Arial, Helvetica, sans-serif"><font size="2"> 
          Image Name : 
      <asp:Literal runat="server" ID="lblImage" />
                                           </font></font>     </p>
        

<font size="2"><font color="#CCCCCC" face="Verdana, Arial, Helvetica, sans-serif">Image 
          Size :  
            <asp:Literal ID="lblImage1" runat="server"></asp:Literal>
     </font></font>
          </p>
        

<font color="#CCCCCC" face="Verdana, Arial, Helvetica, sans-serif" size="2">Image
        type : 
            <asp:DropDownList ID="DropDownList1" runat="server">
            </asp:DropDownList>
            </font><font face="Verdana" size="2"></font></p>
      </div>
    </td>
  </tr>

</table>


  <TABLE border="1" width="100%" bgcolor="#CCCCCC" bordercolor="#666666" cellspacing="0" cellpadding="5">
    <tr bgcolor="#666666"> 
      <TD align=left width="350">
	  <font face="Verdana, Arial, Helvetica, sans-serif"><font size="2" color="#CCCCCC">
	  Select max results images:</font></font> 
          <asp:TextBox ID="TextBox1" runat="server" CausesValidation="True"></asp:TextBox>
<asp:RangeValidator ID="validate_maxresult" runat="server" 
              ControlToValidate="TextBox1" ErrorMessage="Valore non valido" 
              MaximumValue="255" MinimumValue="0" Type="Integer"></asp:RangeValidator>
                                        </td>
	  <td align=left width="350">
  	  <font face="Verdana, Arial, Helvetica, sans-serif"><font size="2" color="#CCCCCC">
	  Use index:</font></font> 
	  
	      <asp:CheckBox ID="index" runat="server" />
</TD>
    </TR>
    <tr bgcolor="#EAE9E1"> 
      <TD align=left width="700" height="18" colspan="2"> </TD>
    </TR>

    
 </table>

 <table  border=1 width="100%" bgcolor="#CCCCCC" bordercolor="#666666" cellspacing="0" cellpadding="5">
    <TR bgcolor="#666666"> 
      <TD align=left width="700"><font face="Verdana" size="2" color="#CCCCCC">Retrieval</font><font color="#CCCCCC"><font face="Verdana" size="2"> 
        Parameters</font><font face="Verdana" size="2" color="#CCCCCC"> 
        <font size="1">(Select all the features to be used in the retrieval process)</font></font> </font></TD>
    </TR>
    <TR> 
      <TD align=left width="800"> 
        <table border="0" width="800" cellspacing="0" cellpadding="5" bgcolor="#B4C7CB">
          <tr> 
            <td width="99"><font face="Verdana" color="#666666"><font color="#000000">RGB</font></font></td>
            <td width="100"> 
              
                <asp:CheckBox ID="RGB_dist" runat="server" />
<font face="Verdana" size="1">Distance

              </font> 
                <asp:CheckBox ID="RGB_sim" runat="server" />
<font face="Verdana" size="1">Similarity</font></td>
            <td width="116"> 
                <asp:CheckBox ID="RGB_3D" runat="server" />
<font face="Verdana" size="1">3D

              </font> 
                <asp:CheckBox ID="RGB_3Dnn" runat="server" />
<font face="Verdana" size="1">3D Not Null</font></td>
            <td width="105"> 
                <asp:CheckBox ID="RGB_meancol" runat="server" />
<font face="Verdana" size="1">Mean Color

              </font> 
            </td>
            <td width="104" rowspan="5" bgcolor="#83A3A9"> 
                <asp:CheckBox ID="CLG" runat="server" />
<font face="Verdana" size="1">CLG</font></td>
			 <td width="104" rowspan="9" >
			 
			 <center>
			 Parametri consigliati:


			 			     <asp:Button ID="col1" runat="server" Text="Colore 1" />



			     <asp:Button ID="col2" runat="server" Text="Colore 2" />



			     <asp:Button ID="col3" runat="server" Text="Colore 3" />



			     <asp:Button ID="forma1" runat="server" Text="Forma 1" />



			     <asp:Button ID="forma2" runat="server" Text="Forma 2" />



			     <asp:Button ID="col_for1" runat="server" Text="Colore e forma 1" />



			     <asp:Button ID="col_for2" runat="server" Text="Colore e forma 2" />



			 </center>
             </td>
          </tr>
          <tr> 
            <td colspan="4" width="456"> 
              <hr size="1" noshade width="90%">
            </td>
          </tr>
          <tr> 
            <td width="99"><font face="Verdana" color="#000000">Luv</font></td>
            <td width="100"> 
                <asp:CheckBox ID="LUV_dist" runat="server" />
<font face="Verdana" size="1">Distance

              </font> 
                <asp:CheckBox ID="LUV_sim" runat="server" />
<font face="Verdana" size="1">Similarity</font></td>
            <td width="116"> 
                <asp:CheckBox ID="LUV_3D" runat="server" />
<font face="Verdana" size="1">3D

              </font> 
                <asp:CheckBox ID="LUV_3Dnn" runat="server" />
<font face="Verdana" size="1">3D Not Null</font></td>
            <td width="105"> 
                <asp:CheckBox ID="LUV_meancol" runat="server" />
<font face="Verdana" size="1">Mean Color

              </font> 
                <asp:CheckBox ID="LUV_sub" runat="server" />
<font face="Verdana" size="1">Sub Color</font></td>
          </tr>
          <tr> 
            <td colspan="4" width="456"> 
              <hr size="1" noshade width="90%">
            </td>
          </tr>
          <tr> 
            <td width="99"><font face="Verdana" color="#000000">Intensity</font></td>
            <td width="228" colspan="2"> 
                <asp:CheckBox ID="g_intensity" runat="server" />
<font face="Verdana" size="1">Gray Intensity</font></td>
            <td width="105"></td>
          </tr>
          <tr> 
            <td colspan="5" width="572"> 
              <hr size="1" noshade width="90%">
            </td>
          </tr>
          <tr> 
            <td width="99"><font face="Verdana" color="#000000">Shape</font></td>
            <td width="100"> 
                <asp:CheckBox ID="area" runat="server" />
<font face="Verdana" size="1">Area

              </font> 
                <asp:CheckBox ID="perimeter" runat="server" />
<font face="Verdana" size="1">Perimeter

              </font> 
                <asp:CheckBox ID="compactness" runat="server" />
<font face="Verdana" size="1">Compactness

              </font> 
                <asp:CheckBox ID="elongation" runat="server" />
<font face="Verdana" size="1">Degree of Elongation</font></td>
            <td width="116"> 
                <asp:CheckBox ID="fitting" runat="server" />
<font face="Verdana" size="1">Fitting

              </font> 
                <asp:CheckBox ID="elliptical" runat="server" />
<font face="Verdana" size="1">Elliptical Fitting</font>

                <asp:CheckBox ID="circle" runat="server" />
<font face="Verdana" size="1">Circle Fitting</font></td>
            <td width="105"> 
                <asp:CheckBox ID="dissimetry" runat="server" />
<font face="Verdana" size="1">Dissimetry Index

              </font> 
                <asp:CheckBox ID="edge" runat="server" />
<font face="Verdana" size="1">Edge Direction

              </font> 
                <asp:CheckBox ID="fdescr" runat="server" />
<font face="Verdana" size="1">Fourier Descriptors</font></td>
            <td width="104"> 
                <asp:CheckBox ID="projection" runat="server" />
<font face="Verdana" size="1">Projection

              </font> 
                <asp:CheckBox ID="invariance" runat="server" />
<font face="Verdana" size="1">Invariance Moment

              </font> 
                <asp:CheckBox ID="polar" runat="server" />
<font face="Verdana" size="1">Polar Transform</font></td>
          </tr>
          <tr> 
            <td colspan="5" width="572"> 
              <hr size="1" noshade width="90%">
            </td>
          </tr>
          <tr> 
            <td width="99"><font face="Verdana" color="#000000">Texture</font></td>
            <td width="437" colspan="4"> 
                <asp:CheckBox ID="sp_correlation" runat="server" />
<font face="Verdana" size="1">Spatial Correlation

              </font>
                <asp:CheckBox ID="tamura" runat="server" />
<font face="Verdana" size="1">Tamura Features

              </font>
                <asp:CheckBox ID="gabor" runat="server" />
<font face="Verdana" size="1">Gabor Wavelets</font></td>
          </tr>
        </table>
      </TD>
    </TR>
    <TR bgcolor="#EAE9E1"> 
      <TD 
    align=left width="700"></TD>
    </TR>
    <TR bgcolor="#EAE9E1"> 
      <TD 
    align=left width="700" bgcolor="#B4C7CB"><font face="Verdana" size="2">Search
          <asp:DropDownList ID="DropDownList2" runat="server">
          </asp:DropDownList>
type images</font></TD>
    </TR>
    <TR bgcolor="#EAE9E1"> 
      <TD 
    align=left width="700"></TD>
    </TR>
    <TR bgcolor="#666666"> 
      <TD 
    align=left width="700" valign="middle"> 
          <asp:Button ID="Button8" runat="server" Text="Start query" />
          <font size="2" color="#CCCCCC" face="Verdana, Arial, Helvetica, sans-serif">
        !!! The elaboration process can take 20-40 seconds !!!</font>
      </TD>
    </TR>
  </TABLE>
</FORM>
        
        <div align="center">
          <table border="0" cellpadding="0" cellspacing="0" width="600">
            <tr>
              <td></td>
            </tr>
          </table>
        </div>

  </center>
<div align="center">
  <center>
  <table border="0" cellpadding="0" cellspacing="0" width="600">
    <tr>
      <td colspan="2" width="598">
        <hr>
      </td>
    </tr>
    <tr>
      <td width="175"><font size="1" face="Verdana">KINGFISHER HOME PAGE</font></td>
    </center>
    <td width="421">
      <p align="right"><font size="1" face="Verdana">DIBE</font></td>
  </tr>
  </table>
    
    </div>
    

</P>
    </form>
</body>
</html>
Per fare un esempio vorrei che il pulsante colore1 mettesse la spunta a rgb_dist e luv_dist.

Inoltre dovrei fare in modo che se si preme un pulsante, oltre a spuntare alcune checkbox,

venga prima tolta la spunta a qualsiasi checkbox cui fosse stata messa la spunta in

precedenza.

Qualcuno può darmi una mano?

Grazie in anticipo