#region Sorting
protected void grdAnnDetails_Sorting(object sender, GridViewSortEventArgs
e)
{
hidecontrl();
DataTable dt = Session["All"]
as DataTable;
if (dt != null)
{
dt.DefaultView.Sort = e.SortExpression + "
" + GetSortDirection(e.SortExpression);
}
}
#endregion
#region
SortDirection
private string
GetSortDirection(string column)
{
string sortDirection = "ASC";
string sortExpression = ViewState["SortExpression"] as string;
if (sortExpression != null)
{
if (sortExpression == column)
{
string
lastDirection = ViewState["SortDirection"]
as string;
if ((lastDirection != null) && (lastDirection == "ASC"))
{
sortDirection = "DESC";
}
}
}
ViewState["SortDirection"]
= sortDirection;
ViewState["SortExpression"]
= column;
return sortDirection;
}
#endregion
#region
Filtering
protected override void OnPreRender(EventArgs
e)
{
try
{
hidecontrl();
buildFilterView(ObjD.FilterExpression);
}
catch (Exception
ex)
{
ErrorHelper.Add(Convert.ToString(ex.Message), Convert.ToString(ex.StackTrace));
SPUtility.TransferToErrorPage(MessageHelper.Message(MessageMode.CommonErrorMessage));
}
}
void buildFilterView(string
filterExp)
{
string
lastExp = filterExp;
if (lastExp.Contains("AND"))
{
if (lastExp.Length <
lastExp.LastIndexOf("AND") + 4)
{ lastExp = lastExp.Substring(lastExp.LastIndexOf("AND") + 4); }
else
{ lastExp = string.Empty; }
}
//update the filter
if (!string.IsNullOrEmpty(lastExp))
{
FilterExpression = lastExp; }
//reset object dataset filter
if (!string.IsNullOrEmpty(FilterExpression))
{
ObjD.FilterExpression = FilterExpression; }
}
protected override void LoadViewState(object
savedState)
{
base.LoadViewState(savedState);
if (Context.Request.Form["__EVENTARGUMENT"]
!= null &&
Context.Request.Form["__EVENTARGUMENT"].Contains("__ClearFilter__"))
{
ViewState.Remove("FilterExpression");
}
}
string FilterExpression
{
get
{
if (ViewState["FilterExpression"]
== null)
{ ViewState["FilterExpression"]
= ""; }
return (string)ViewState["FilterExpression"];
}
set
{
string thisFilterExpression = "(" + value.ToString()
+ ")";
List<string>
fullFilterExpression = new List<string>();
if (ViewState["FilterExpression"]
!= null)
{
string[] fullFilterExp = ViewState["FilterExpression"].ToString().Split(_ssep,
StringSplitOptions.RemoveEmptyEntries);
fullFilterExpression.AddRange(fullFilterExp);
int index = fullFilterExpression.FindIndex(s
=> s.Contains(thisFilterExpression));
if (index == -1)
{ fullFilterExpression.Add(thisFilterExpression); }
}
else
{
fullFilterExpression.Add(thisFilterExpression);
}
string filterExp = string.Empty;
fullFilterExpression.ForEach(s => filterExp += s + " AND ");
filterExp = filterExp.Remove(filterExp.LastIndexOf(" AND "));
if
(!filterExp.EndsWith("))")
&& filterExp.Contains("AND"))
{ filterExp = "(" +
filterExp + ")"; }
ViewState["FilterExpression"]
= filterExp;
}
}
public void
AssignData()
{
ObjD = new
ObjectDataSource();
ObjD.ID = "gridds";
ObjD.SelectMethod = "GetData";
ObjD.FilterExpression = FilterExpression;
ObjD.TypeName = this.GetType().AssemblyQualifiedName;
ObjD.ObjectCreating += new ObjectDataSourceObjectEventHandler(ObjD_ObjectCreating);
this.Controls.Add(ObjD);
grdAnnouAll.DataSourceID = ObjD.ID;
ObjD.Filtering += new ObjectDataSourceFilteringEventHandler(ObjD_Filtering);
}
public DataTable
GetData()
{
DataTable dt = new
DataTable();
if (ViewState["Dboard"]
== null)
{
if (!string.IsNullOrEmpty(Request.QueryString["Annmoreid"]))
{
if (!string.IsNullOrEmpty(EncryptHelper.DecryptText(Request.QueryString["Annmoreid "])))
{
AnnouncementBL obj = new AnnouncementBL(Convert.ToInt32((EncryptHelper.DecryptText(Request.QueryString["Annmoreid "]))));
if (IsSuperAdmin || IsAdmin || IsManager)
{
ViewState["Dboard"] = obj.GetAllItems();
}
else
{
ViewState["Dboard"] = obj.GetDispalyedListItem();
}
}
else
{
Response.Redirect("/Pages/Hme.aspx", false);
}
}
else
{
AnnouncementBL allobj = new AnnouncementBL();
ViewState["Dboard"] = allobj.GetAllListItem();
}
}
dt = (DataTable)ViewState["Dboard"];
return dt;
}
void ObjD_Filtering(object
sender, ObjectDataSourceFilteringEventArgs
e)
{
ViewState["FilterExpression"]
= ((ObjectDataSourceView)sender).FilterExpression;
}
void ObjD_ObjectCreating(object
sender, ObjectDataSourceEventArgs e)
{
e.ObjectInstance = this;
}
#endregion
Assigndata should be called in Pageload
