ViewState : A look

ViewState



ASP.NET ViewState is a new concept. Here the data related to the pages and controls are stored in ViewState which retains the values across multiple requests to the server. If you remember correctly, in VB-ASP applications we used to store data across multiple requests using hidden fields. ViewState is actually implemented internally as hidden fields in ASP.NET but here the data is hashed to improve security as against hidden fields. To see how ViewState is implemented, you can view the source of the page in which ViewState is used in the Internet browser. ViewState should not be used to store large amounts of data as it is passed to the server for each request

protected void Page_Load(object sender, EventArgs e)

{
if (this.ViewState["MY_NAME"] == null)
{
this.ViewState["MY_NAME"] = "Shuby";
}

//txtName is a TextBox control

this.txtName.Text = this.ViewState["MY_NAME"].ToString();
}


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