c# - Deleting Columns Error -


building asp website, using 4.5 , c#. i'm using gridview display database records, update / delete buttons enabled. works fine except delete button. following error:

one or more values missing required parameters.

the parameter delete command, see, userid, i'm not sure i'm missing.

anyone have thoughts? thanks.

<asp:gridview id="grdusers" runat="server" autogeneratecolumns="false" datasourceid="sqldatasource1">         <columns>             <asp:boundfield datafield="userid" headertext="userid" insertvisible="false" sortexpression="userid" />             <asp:boundfield datafield="username" headertext="username" sortexpression="username" />             <asp:boundfield datafield="userpassword" headertext="userpassword" sortexpression="userpassword" />             <asp:boundfield datafield="securitylevel" headertext="securitylevel" sortexpression="securitylevel" />             <asp:commandfield showeditbutton="true" />             <asp:commandfield showdeletebutton="true" />         </columns>     </asp:gridview>     <asp:sqldatasource id="sqldatasource1" runat="server" connectionstring="<%$ connectionstrings:connectionstring %>" providername="<%$ connectionstrings:connectionstring.providername %>"          selectcommand="select * [tbluserlogin]" onselecting="sqldatasource1_selecting"         deletecommand="delete [tbluserlogin] [userid] = ?"         updatecommand="update [tbluserlogin] set [username] = ?, [userpassword] = ?, [securitylevel] = ? [userid] = ?">         <deleteparameters>             <asp:parameter name="userid" type="int32" />         </deleteparameters>         <updateparameters>             <asp:parameter name="username" type="string" />             <asp:parameter name="userpassword" type="string" />             <asp:parameter name="securitylevel" type="char" />         </updateparameters>     </asp:sqldatasource>

have executed delete [tbluserlogin] [userid] =xxx manually on database using sql server management studio. there constraints on tbluserlogin causing error behind scenes.

please check cant delete in database because of constraints if rings bell.


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