Excel file from Controller

-
Very easy way to create Excel quickly....

public void ExcelResults(int id)
{
         Business.Agreement_Provider agr = new Business.Agreement_Provider();
         List<MyModel> model = new List<MyModel>();
         var agreements = agr.getExpiringAgreements(id);
         model = agreements.ToList();
         model.OrderBy(p => p.My_Number);

         Export export = new Export();
         export.ToExcel(Response, model);
       
}

Two methods  - Call the first one from the page and then it uses the public
Export class to return a file. The nice thing about the Export class is that we are passing our model in as an object   - this allows us to reuse this same class for any model.

public class Export
        {
            public void ToExcel(HttpResponseBase Response, object myList)
            {
                var grid = new System.Web.UI.WebControls.GridView();
                var thisDate = DateTime.Now.ToShortDateString().Replace("/","_");
                grid.CssClass = "table table-bordered table-striped table-condensed";
                grid.DataSource = myList;
                grid.DataBind();
                Response.ClearContent();
                Response.AddHeader("content-disposition",
                  "attachment; filename=MyFileName_" + thisDate + ".xls");
                Response.ContentType = "application/excel";
                StringWriter sw = new StringWriter();
                HtmlTextWriter htw = new HtmlTextWriter(sw);
             
                grid.RenderControl(htw);
                Response.Write(sw.ToString());
                Response.End();
            }
        }

Comments

Post a Comment

Popular posts from this blog

Linq Exclude from separate list

-
 var urlList = new List<DisplayAssets>();    var assetsToExclude = (from a in db.DisplayAssets                 join h in db.Hardware_Assets on a.id equals h.displayId                 where h.assetId == hardwareid                 select a.id); var allAssets = db.DisplayAssets; var urls = allAssets.Where(x => !assetsToExclude.Contains(x.id));         urlList = urls.Select(a => new DisplayAssets()         {             locaterAddress  = a.locaterAddress,             assetType = a.assetType,             id = a.id         })         .ToList();
Read more

Sorting Ascending and Descending

-
Toggling the direction of your datagrid sort is easy using a session to remember which direction you sorted last.   You will want to declare an empty string in the top of your page       Dim SortField As String Then on your sort command add this logic - Example of entire command Private Sub dgTaskExceptions_SortCommand( ByVal source As Object , ByVal e As System.Web.UI.WebControls.DataGridSortCommandEventArgs) Handles dgTaskExceptions.SortCommand     SortField = e.SortExpression If Session( "toggle" ) = True Then SortField += " DESC" Session( "toggle" ) = False Else SortField += " Asc" Session( "toggle" ) = True End If Dim orderstring As String = SortField 'REBIND dgTaskExceptions.DataSource = POTracking_Data.tracking.getSampleTasks(orderstring) dgTaskExceptions.DataBind() End Sub   In my datalayer I add this logic to my query and pass in an OPTIONAL value Dim orderbyString As String = String .Empt
Read more

Linq Query Syntax vs Method Syntax

-
Referenced from MSDN: https://msdn.microsoft.com/en-us/library/bb397947.aspx Query syntax: IEnumerable<int> numQuery1 =               from num in numbers             where num % 2 == 0             orderby num             select num; Method syntax:         IEnumerable<int> numQuery2 = numbers.Where(num => num % 2 == 0).OrderBy(n => n)
Read more