Int.Parse And Int.TryParse Engine?

Posted by Sabarimahesh under ASP.NET category on 4/18/2012 | Points: 40 | Views : 3290

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Asp Source Code:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:Label ID="Label4" runat="server" BorderColor="#FF3300" 
            BorderStyle="Groove" Font-Bold="True" Text="   int.Parse" Width="59px"></asp:Label>
        <br />
        <br />
        <asp:Label ID="Label3" runat="server" Text="Input Value"></asp:Label>
        <br />
        <asp:TextBox ID="TextBox1" runat="server" Height="21px" Width="128px"></asp:TextBox>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" 
            Text="Convert To Int.parse" />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Button ID="Button2" runat="server" onclick="Button2_Click" 
            Text="Convert To int.TryParse" />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <br />
        <br />
        <br />
        <asp:Label ID="Label2" runat="server" Text="Result"></asp:Label>
        <br />
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
        <br />
    
    </div>
    </form>
</body>
</html>

C# Code

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {


    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string M = TextBox1.Text.ToString();

            int result = Int32.Parse(M);

            TextBox2.Text = result.ToString();

        }


        catch
        { 
           
            string M = TextBox1.Text.ToString();
            bool r1 = Convert.ToBoolean(float.Parse(M));
            bool r2= Convert.ToBoolean(M = null);
            bool r3 = Convert.ToBoolean(Convert.ToUInt32(M) );


            if (r1==true)
            {
                TextBox2.Text = "ERROR:FormatException";

            }
            if (r2==true)
            {
                TextBox2.Text = "ERROR:ArgumentNullException";
            }
            if(r3==true)
            {
                TextBox2.Text = "ERROR:OverflowException";
                
            } 
        }

    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        string M = TextBox1.Text.ToString();
        int result;

        bool output = Int32.TryParse(M,out result);
        TextBox2.Text = result.ToString();

      
 
        
    }


}

If You What any Reference Regarding this
http://www.dotnetfunda.com/blogs/sabarimahesh/2152/difference-between-int32parse-int32tryparse-and-converttoint32

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Comments or Responses

Posted by: Sangeetha Mani on: 3/1/2013 Level:Starter | Status: [Member] | Points: 10

ya its k to understand the tryparse but my suggestion is to explain the differentiation about parse and tryparse in text is easiy to recall for people who forgot about it.

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