You can call helper class in any controller
//view
@Html.ActionLink("Export to Excel", "Excel")
//controller Action
public void Excel()
{
var model = db.GetModel()
Export export = new Export();
export.ToExcel(Response, model);
}
//helper class
public class Export
{ public void ToExcel(HttpResponseBase Response, object clientsList)
{
var grid = new System.Web.UI.WebControls.GridView();
grid.DataSource = clientsList;
grid.DataBind();
Response.ClearContent();
Response.AddHeader("content-disposition", "attachment; filename=FileName.xls");
Response.ContentType = "application/excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
grid.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
}
}