c# - This insert query in webforms is throwing an error and I'm not sure why -

it's web forms application , i'm having trouble finding out going wrong.

i trying insert info logins table.

everything works apart when add [user] username of person logged in @ time. there entry username that's working fine.

image of logins table

the aspx.cs code behind:

protected void add_click(object sender, eventargs e)      {         string currentuser = user.identity.name;          int webid = convert.toint32(ddlwebsite.selecteditem.value);         string username = username.text;         string _email = email.text;         string pass = password.text;         string ainfo = info.text;         string loguser = user.identity.name;          //string connectionstring = "data source=(localdb)\\mssqllocaldb;attachdbfilename=|datadirectory|\aspnet-webprog-20170720092452.mdf;initial catalog=aspnet-webprog-20170720092452;integrated security=true";         sqlconnection connection = new sqlconnection(configurationmanager.connectionstrings["defaultconnection"].tostring());          string query = "insert logins(websiteid, username, password, additionalinfo, user, email) values ( @webid, @username, @pass, @ainfo, @loguser, @_email)";          sqlcommand insertquery = new sqlcommand(query,connection);          insertquery.parameters.addwithvalue("@webid", webid);         insertquery.parameters.addwithvalue("@username", username);         insertquery.parameters.addwithvalue("@pass", pass);         insertquery.parameters.addwithvalue("@ainfo", ainfo);         insertquery.parameters.addwithvalue("@loguser", user.identity.name);           insertquery.parameters.addwithvalue("@_email", _email);          connection.open();         insertquery.executenonquery();         connection.close();     } 

the aspx markup:

add login

    <div id="websitedetails" class="col-md-4">          <label id="label1" for="websitename">             website name:                             <asp:sqldatasource id="sqldatasource1" runat="server" connectionstring="<%$ connectionstrings:defaultconnection %>" selectcommand="select [id], [name] [websitelist]"></asp:sqldatasource>             <asp:dropdownlist id="ddlwebsite" runat="server" datasourceid="sqldatasource1" datatextfield="name" datavaluefield="id"></asp:dropdownlist>              <asp:button id="button1" runat="server" text="addawebsite" />         </label>         <label id="label3" for="username">             username/email:             <asp:textbox id="username" runat="server"></asp:textbox>         </label>         <label id="label4" for="password">             password:             <asp:textbox id="password" runat="server"></asp:textbox>         </label>         <label id="label6" for="email">             email address:             <asp:textbox id="email" runat="server"></asp:textbox>         </label>         <label id="label5" for="info">             additional info:             <asp:textbox id="info" runat="server"></asp:textbox>         </label>     </div>     <asp:sqldatasource id="sqldatasource2" runat="server"></asp:sqldatasource>     <div id="logindetails" class="col-md-4">         <p>website not showing in list? add website list.</p>         <label id="label7" for="websitename">             website name:             <asp:textbox id="wname" runat="server"></asp:textbox>         </label>         <label id="label8" for="link">             website address:             <asp:textbox id="link" runat="server"></asp:textbox>         </label>     </div>     <asp:button id="addwebsite" runat="server" text="add website" onclick="addwebsite_click" />    </div> <asp:button id="add" runat="server" text="add login" class="btn btn-default" onclick="add_click" /> 

this error message doesn't tell me @ all

well user reserved word , that's issue here can seen in posted insert statement. needs escaped [user] if it's sql server or use ansi style escaping using double quotes "user"

insert logins(websiteid, username, password, additionalinfo, [user], email)