State management in Asp.net

09 Dec 2016

Document by Vairavan – Ganesanva@hotmail.com – +919042710472

There are 2 types of state management
1.Server side
2.Client Side
Client Side

View State
Hidden Fields
Cookies
Query strings

Server Side

Application state
Session state

View state
It allows to maintain the value with in the page
Hidden Fields
It is the control in Asp.net used to store value with in the page. It does not shows visibility in the page.
Cookies
It is the small amount of data stored in client browser session
Query string
IT allows to pass the data from one page to another in the browser URL.
Application state:
Asp.net allows to save values using Application state in HttpApplicationstate class.
Session State:
It allows to store data in the server side using HttpSessionState class.
Create a new Project File –>New Project in Visual studio

Click ok.
Right Click on the solution and Add New Item.
Select Web form and Name GetValues.aspx.

Add one another form as SetValues.aspx
Put / Replace the below HTML in SetValues.aspx

Put / Replace the below code in SetValues.aspx.cs

public partial class SetValues : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSetSession_Click(object sender, EventArgs e)
{
Session[“Uservalue”] = txtsessionvalue.Text;
Response.Redirect(“GetValues.aspx?ID=2”);
}
}

Put / Replace the below HTML in GetValues.aspx

<!DOCTYPE html>
<html xmlns=”http://www.w3.org/1999/xhtml”>
<head runat=”server”>
<title></title>
</head>
<body>
<form id=”form1″ runat=”server”>
<div>
<asp:TextBox ID=”txtviewstate” runat=”server”></asp:TextBox>
<asp:Button ID=”btnGetSession” runat=”server” Text=”Get Session” OnClick=”btnGetSession_Click” />
<asp:Button ID=”btnSetViewState” runat=”server” Text=”Set View State” OnClick=”btnSetViewState_Click” />
<asp:Button ID=”btnGetViewState” runat=”server” Text=”Get View State” OnClick=”btnGetViewState_Click” />
<asp:Button ID=”btnGetQuerystringvalue” runat=”server” Text=”Get Query string Value” OnClick=”btnGetQuerystringvalue_Click” />
</div>
</form>
</body>
</html>

Put / Replace the below code in GetValues.aspx.cs

public partial class GetValues : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnGetSession_Click(object sender, EventArgs e)
{
string sessionvalue = (string)Session[“Uservalue”];
Response.Write(“The Session State value is ” + sessionvalue);
}
protected void btnSetViewState_Click(object sender, EventArgs e)
{
ViewState[“data”] = txtviewstate.Text;
}
protected void btnGetViewState_Click(object sender, EventArgs e)
{
string viewstatevalue = (string)ViewState[“data”];
Response.Write(“The view State value is “+viewstatevalue);
}
protected void btnGetQuerystringvalue_Click(object sender, EventArgs e)
{
string QueryStringvalue = (string)Request.QueryString[“ID”];
Response.Write(“The Query string value is ” + QueryStringvalue);
}
}