The following example programmatically checks text pulled from a source (ArrayList) for errors and in cases where a string has an error, a textbox is shown with the RapidSpellWInline control used to highlight the errors. This allows the user to correct the mistake. To use the following, setup a project with our standard RSWIHelper.aspx page in it. ASPX - WebForm1.aspx <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="RapidSpellWeb_Demo_CSharp.kiran.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
</form>
</body>
</HTML> CODE BEHIND - WebForm1.aspx.cs using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls; namespace RapidSpellWeb_Demo_CSharp
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
int textFieldCounter = 0; private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
ArrayList stringsFromDB = new ArrayList(new string[]{"sume errars", "no errors", "some moore errors", "some digits 12345", "no errors again", "same moore error"});
AddFields(stringsFromDB);
} void AddFields(ArrayList stringsFromDB){
ArrayList spellcheckerIDs = new ArrayList(); //Replace this license key with your own, or a current trial key. This key was created at the time
//of writing and may have expired.
Keyoti.RapidSpell.RapidSpellChecker c = new Keyoti.RapidSpell.RapidSpellChecker("5752675E645A665F68596A69615A663839383D43383D3A3F413D4342434A4248474C528"); foreach(string fromDB in stringsFromDB)
{
c.Check(fromDB);
if(c.NextBadWord()!=null)//errors
{
SpellCheckField(fromDB, spellcheckerIDs);
}
else //none
{
ShowField(fromDB);
}
FindControl("Form1").Controls.Add(new LiteralControl("<br /><br />"));
}
Keyoti.RapidSpell.RapidSpellWebMultiple rswm = new Keyoti.RapidSpell.RapidSpellWebMultiple();
rswm.ID="rswm";
rswm.ShowFinishedMessage = false;
rswm.RapidSpellWebLaunchers = new Keyoti.RapidSpell.RapidSpellWebLauncherCollection(String.Join(",", (string[])spellcheckerIDs.ToArray(typeof(string)) ));
rswm.ShowButton = false;
FindControl("Form1").Controls.Add(rswm); Page.RegisterClientScriptBlock("spellBoot", "<script>function runSpellCheckers(){"+rswm.ClientID+"_RunSpellCheck(true);} window.onload=runSpellCheckers;</script>");
}
void SpellCheckField(string text, ArrayList spellcheckerIDs)
{
Keyoti.RapidSpell.RapidSpellWInline rswi = null;
TextBox dbText = new TextBox();
dbText.TextMode = TextBoxMode.MultiLine;
dbText.ID = "dbText_"+(textFieldCounter++);
dbText.Text = text; rswi = new Keyoti.RapidSpell.RapidSpellWInline();
rswi.RSMultipleID = "rswm";
rswi.ID= "rswi_"+textFieldCounter;
rswi.TextComponentID = dbText.ID;
rswi.ShowButton = false;
rswi.RapidSpellWInlineHelperPage = "rswihelper.aspx";
FindControl("Form1").Controls.Add(dbText);
FindControl("Form1").Controls.Add(rswi); spellcheckerIDs.Add(rswi.ClientID);
} void ShowField(string text)
{
Label dbText = new Label();
dbText.Text = text;
FindControl("Form1").Controls.Add(dbText); }
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
}
You can see that the RapidSpellWebMultiple control is hidden by the property rswi.ShowButton - this is to force the user to correct errors without skipping out. Extending further You can extend the example by adding a client script validator to the page, to check that all errors have been dealt with before continuing. To the ASPX, add a postback button (if not already there) <asp:Button id="Button1" runat="server" Text="Finish"></asp:Button> and a CustomValidator
<asp:CustomValidator id="CustomValidator1"
runat="server" ErrorMessage="Sorry, there are still errors." ClientValidationFunction="CheckForRemainingErrors"></asp:CustomValidator>
Note that the validator needs to call a JS function to check the number of errors. So add a script block <script>
function CheckForRemainingErrors(val, args){
var errorTally=0;
for(var i=0; i<rsw_tbs.length; i++){
errorTally += rsw_tbs[i].getNumberOfErrors();
}
args.IsValid = errorTally == 0;
}
</script> This block just sums up the number of errors in each spell checker, and sets the IsValid flag true if there are zero. Here's the modified ASPX page: <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="RapidSpellWeb_Demo_CSharp.kiran.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<script>
function CheckForRemainingErrors(val, args){
var errorTally=0;
for(var i=0; i<rsw_tbs.length; i++){
errorTally += rsw_tbs[i].getNumberOfErrors();
}
args.IsValid = errorTally == 0;
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:Button id="Button1" runat="server" Text="Finish"></asp:Button>
<asp:CustomValidator id="CustomValidator1"
runat="server" ErrorMessage="Sorry, there are still errors." ClientValidationFunction="CheckForRemainingErrors"></asp:CustomValidator>
</form>
</body>
</HTML> This is just one of many ways you can use RapidSpell to validate user input. Please also see the example project that came with the product for simpler validator examples. |