C# Sending GridViews/DataTables via Email - email

Question

I'm trying the find the best way to send a GridView or DataTable in an email.
Page Behind Code:
protected void Page_Load(object sender, EventArgs e)
{
DataTable s1 = Sql.specificReportData(Convert.ToInt32(Session["userID"]));
this.gv.DataSource = s1.DefaultView;
this.gv.DataBind();
}
This generates and binds the data successfully, but if I try and add the contents of gv to a HTML encoded email then the gv part of the email is blank. Do I need to alter the GridView so it's HTML compliant? I can't find an example of how to do this. Any help appreciated.
edit: Gave answer to Solairaya as he gave fuller example, as well as object flushing and disposal. Marked both answers up as they both helped

Answer 1

Page behind code
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = getHTML(GridView1);
}
private string getHTML(GridView gv)
{
StringBuilder sb = new StringBuilder();
StringWriter textwriter = new StringWriter(sb);
HtmlTextWriter htmlwriter = new HtmlTextWriter(textwriter);
gv.RenderControl(htmlwriter);
htmlwriter.Flush();
textwriter.Flush();
htmlwriter.Dispose();
textwriter.Dispose();
return sb.ToString();
}
public override void VerifyRenderingInServerForm(Control control)
{
return;
}
Page code
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="UserID" HeaderText="UserID" SortExpression="UserID" />
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DBConnectionString %>"
SelectCommand="SELECT [UserID], [Name], [Email] FROM [WEB_Users] WHERE ([Name] LIKE '%' + #Name + '%')">
<SelectParameters>
<asp:Parameter DefaultValue="%Moha%" Name="Name" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
<br />
<br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></div>
</form>

Answer 2

Hai alex try this,
Try this (C#):
using System.IO;
using System.Text;
using System.Net.Mail;
private string GridViewToHtml(GridView gv)
{
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
HtmlTextWriter hw = new HtmlTextWriter(sw);
gv.RenderControl(hw);
return sb.ToString();
}
protected void SendMailButton_Click(object sender, EventArgs e)
{
MailMessage mail = new MailMessage();
mail.Body = GridViewToHtml(GridView1);
mail.IsBodyHtml = true;
......
}
public override void VerifyRenderingInServerForm(Control control)
{
}