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How to create and read cookie values in asp.net using c#

Here I will explain how to create and read cookie values in asp.net using c#.
By using Response.Cookies and Request.Cookies properties we can create and read cookie values in asp.net using c#.


Default.aspx

 Add this html in your aspx page :

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Write and Read Cookies in Asp.net using C#</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:button id="btnWrite" runat="server" text="Write Cookies" onclick="btnWrite_Click" />
        <asp:button id="btnRead" runat="server" text="Read Cookie Values" onclick="btnRead_Click"             />
        <br />
        <asp:label id="lblResult" runat="server" />
    </div>
    </form>
</body>
</html>


Default.aspx.cs

 Add this namespaces and code in code behind file :

using System;

using System.Web;

protected void btnWrite_Click(object sender, EventArgs e)
{
Response.Cookies["UserId"].Value = "123";
Response.Cookies["UserId"].Expires = DateTime.Now.AddDays(1);
Response.Cookies["UserName"].Value = "Nikhil Sangani";
Response.Cookies["UserName"].Expires = DateTime.Now.AddDays(1);
lblResult.Text = "Cookie Values Created Successfully";
}
protected void btnRead_Click(object sender, EventArgs e)
{
string userid = Request.Cookies["UserId"].Value;
string username = Request.Cookies["UserName"].Value;
lblResult.Text = "<b>Cookie Values</b> : UserId: " + userid + ", UserName: " + username;
}

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