in my Asp.net text box when i am clicking the enter(for next line) it is stored as "div " tags in my data base.How to eliminate div tags while storing

hi Ganesh,
As you are using htmleditor extender. So check this link
http://forums.asp.net/t/1789784.aspx/1[^]

Also what you want to save in db is still not clear.
As if you save only string text in db removing html tags, then it will cause problem later on, if you want to display the saved text in the htmleditorextender.

Still you want to save only string text removing HTML tags.
Check this link - http://stackoverflow.com/questions/785715/how-can-i-strip-html-tags-from-a-string-in-asp-net?lq=1[^]

A better approach would be - Saving the html text as it is but by HttpUtility.HtmlEncode()
so later it gets displayed in editor as it is with HttpUtility.HtmlDecode()

And where you need only text no html tags, make a method which returns string text by passing html extender text, with use of regex like above link(save only string text removing HTML tags) and use that method.

public string HTMLToString(string htmlText)
{
 string strText =string.Empty;
if(!string.IsNullOrEmpty(htmlText))
{
 strText = System.Text.RegularExpressions.Regex.Replace(HttpUtility.HtmlDecode(htmlText), @"<[^>]*(>|$)",string.Empty);
strText = System.Text.RegularExpressions.Regex.Replace(strText , @"[\s\r\n]+",string.Empty);
}
 return strText;
}