Concept of SubString Method
SubString is method of a String Class in c#.
Substring Extracts Already Existing Strings.
It is called by string name followed by dot operator.
It requires Start Index and a Length of String then it will return completely new string with the characters in that range.
SYNTAX
DEMO
Next - Assign Index & Length of SubString
Next - Run[F5] Get SubString Result
SubString is method of a String Class in c#.
Substring Extracts Already Existing Strings.
It is called by string name followed by dot operator.
It requires Start Index and a Length of String then it will return completely new string with the characters in that range.
SYNTAX
Substring(start
index,length of String);
HTML CODING
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table><tr><td></td><td>
<asp:Label ID="lblString" runat="server" Font-Size="Larger" ForeColor="#CC3300" Text="AspDotNet"></asp:Label>
</td></tr>
<tr><td></td><td></td></tr>
<tr><td></td><td>
<asp:Button ID="Button1" runat="server" Font-Size="Medium" Height="29px" OnClick="Button1_Click" Text="Get" Width="46px" />
<asp:Button ID="Button2" runat="server" Font-Size="Medium" OnClick="Button2_Click" Text="Get1" />
<asp:Button ID="Button3" runat="server" Font-Size="Medium" OnClick="Button3_Click" Text="Get2" />
</td></tr>
<tr><td></td><td> </td></tr>
<tr><td></td><td>
<asp:Label ID="lblDisplay" runat="server" Font-Size="XX-Large" ForeColor="#FF66CC"></asp:Label>
<br />
<br />
<asp:Label ID="lblDisplay1" runat="server" Font-Size="XX-Large"></asp:Label>
<br />
<br />
<asp:Label ID="lblDisplay2" runat="server" Font-Size="XX-Large" ForeColor="#CC3300"></asp:Label>
</td></tr>
</table>
</div>
</form>
</body>
</html>
C# CODING
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class SubString : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
// Substring(start index,length of String);
lblDisplay.Text =
lblString.Text.Substring(6); // Length
}
protected void Button2_Click(object sender, EventArgs e)
{
// Substring(start index,length of String);
lblDisplay1.Text =
lblString.Text.Substring(0,3); // Index start 0 To Length 3
}
protected void Button3_Click(object sender, EventArgs e)
{
// Substring(start index,length of String);
lblDisplay2.Text = lblString.Text.Substring(3,3); // Index
start 3 To Length 3
}
}
First Add New Web Form - Add Label & Button
From Toolbox
Next - Assign Index & Length of SubString
Next - Run[F5] Get SubString Result
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