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c# - How to convert a string to int

Convert.ToInt32() Method - Convert string to numeric value
.net Convert class allow us to convert a base data type to another base data type. Convert class ToInt32(String) method converts the specified string representation of a number to an equivalent 32 bit signed integer.

Convert.ToInt32(String) overloaded method require to pass a parameter. this parameter name is 'value' which data type is System.String. this parameter pass the string that contains the number to convert. this method return a 32 bit signed integer that is equivalent to the number in value. if the parameter value is null then the method return zero (0).

we also can convert a string object to numeric value (int 32 bit integer) by using Int32.Parse(String) method or Int32.TryParse method. Int32.TryParse method returns an additional value that indicate whether the conversion succeed.

the following c# example code demonstrate us how can we convert a string to int32 numeric value in .net framework.

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">

<script runat="server">
    protected void Button1_Click(object sender, System.EventArgs e) {
        string testString = "55";
        int testNumber = Convert.ToInt32(testString);
        int sum = testNumber + 5;
        Label1.Text = "Test String: " + testString;
        Label1.Text += "<br />Test String now converted to number[Int32]: " + testNumber;
        Label1.Text += "<br />Test Number+5[after convert]: " + sum;

<html xmlns="">
<head id="Head1" runat="server">
    <title>How to convert string to numeric value (number ToInt32) in</title>
    <form id="form1" runat="server">
        <h2 style="color:Red"> example: ToInt32()</h2>
        <br /><br />
             Text="Convert String To Number"
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