/// <summary>
/// Gets the list of data for use by the jqgrid plug-in
/// </summary>
public IActionResult OnGetGridData(string sidx, string sord, int _page, int rows, bool isforJqGrid = true)
{
int totalRecords = CourseEnrollment.GetRecordCount();
int startRowIndex = ((_page * rows) - rows);
List <CourseEnrollment> objCourseEnrollmentCol = CourseEnrollment.SelectSkipAndTake(rows, startRowIndex, sidx + " " + sord);
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)rows);
if (objCourseEnrollmentCol is null)
{
return(new JsonResult("{ total = 0, page = 0, records = 0, rows = null }"));
}
var jsonData = new
{
total = totalPages,
_page,
records = totalRecords,
rows = (
from objCourseEnrollment in objCourseEnrollmentCol
select new
{
id = objCourseEnrollment.EnrollmentId,
cell = new string[] {
objCourseEnrollment.EnrollmentId.ToString(),
objCourseEnrollment.CourseName.ToString(),
objCourseEnrollment.StudentName.ToString(),
objCourseEnrollment.Comments
}
}).ToArray()
};
return(new JsonResult(jsonData));
}
public void GetData(string sidx, string sord, int?_page)
{
int rows = Functions.GetGridNumberOfRows();
int numberOfPagesToShow = Functions.GetGridNumberOfPagesToShow();
int currentPage = _page is null ? 1 : Convert.ToInt32(_page);
int startRowIndex = ((currentPage * rows) - rows);
int totalRecords = CourseEnrollment.GetRecordCount();
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)rows);
List <CourseEnrollment> objCourseEnrollmentCol = CourseEnrollment.SelectSkipAndTake(rows, startRowIndex, sidx + " " + sord);
// fields and titles
string[,] fieldNames = new string[, ] {
{ "EnrollmentId", "Enrollment Id" },
{ "CourseName", "Course Name" },
{ "StudentName", "Student Name" },
{ "Comments", "Comments" }
};
// assign properties
CourseEnrollmentData = objCourseEnrollmentCol;
CourseEnrollmentFieldNames = fieldNames;
TotalPages = totalPages;
CurrentPage = currentPage;
FieldToSort = String.IsNullOrEmpty(sidx) ? "EnrollmentId" : sidx;
FieldSortOrder = String.IsNullOrEmpty(sord) ? "asc" : sord;
FieldToSortWithOrder = String.IsNullOrEmpty(sidx) ? "EnrollmentId" : (sidx + " " + sord).Trim();
NumberOfPagesToShow = numberOfPagesToShow;
StartPage = Functions.GetPagerStartPage(currentPage, numberOfPagesToShow, totalPages);
EndPage = Functions.GetPagerEndPage(StartPage, currentPage, numberOfPagesToShow, totalPages);
}
/// <summary>
/// Shows how to get a specific number of sorted records, starting from an index. The total number of records are also retrieved when using the SelectSkipAndTake() method.
/// For example, if there are 200 records take only 10 records (numberOfRecordsToRetrieve), starting from the first index (startRetrievalFromRecordIndex = 0)
/// The example below uses some variables, here are their definitions:
/// totalRecordCount - total number of records if you were to retrieve everything
/// startRetrievalFromRecordIndex - the index to start taking records from. Zero (0) E.g. If you want to skip the first 20 records, then assign 19 here.
/// numberOfRecordsToRetrieve - take n records starting from the startRetrievalFromRecordIndex
/// sortBy - to sort in Ascending order by Field Name, just assign just the Field Name, do not pass 'asc'
/// sortBy - to sort in Descending order by Field Name, use the Field Name, a space and the word 'desc'
/// </summary>
private void SelectSkipAndTake()
{
int startRetrievalFromRecordIndex = 0;
int numberOfRecordsToRetrieve = 10;
string sortBy = "EnrollmentId";
//string sortBy = "EnrollmentId desc";
// 1. select a specific number of sorted records starting from the index you specify
List <CourseEnrollment> objCourseEnrollmentCol = CourseEnrollment.SelectSkipAndTake(numberOfRecordsToRetrieve, startRetrievalFromRecordIndex, sortBy);
// to use objCourseEnrollmentCol please see the SelectAll() method examples
// No need for Examples 1 and 2 because the Collection here is already sorted
// Example 2: directly bind to a GridView - for ASP.NET Web Forms
// Example 3: loop through all the CourseEnrollment(s). The example above will only loop for 10 items.
}
/// <summary>
/// Gets the list of data for use by the jqgrid plug-in
/// </summary>
public IActionResult OnGetGridDataGroupedByCourseName(string sidx, string sord, int _page, int rows)
{
// using a groupField in the jqgrid passes that field
// along with the field to sort, remove the groupField
string groupBy = "CourseName asc, ";
sidx = sidx.Replace(groupBy, "");
int totalRecords = CourseEnrollment.GetRecordCount();
int startRowIndex = ((_page * rows) - rows);
List <CourseEnrollment> objCourseEnrollmentCol = CourseEnrollment.SelectSkipAndTake(rows, startRowIndex, sidx + " " + sord);
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)rows);
if (objCourseEnrollmentCol is null)
{
return(new JsonResult("{ total = 0, page = 0, records = 0, rows = null }"));
}
var jsonData = new
{
total = totalPages,
_page,
records = totalRecords,
rows = (
from objCourseEnrollment in objCourseEnrollmentCol
select new
{
id = objCourseEnrollment.EnrollmentId,
cell = new string[] {
objCourseEnrollment.EnrollmentId.ToString(),
objCourseEnrollment.CourseName.ToString(),
objCourseEnrollment.StudentName.ToString(),
objCourseEnrollment.Comments,
objCourseEnrollment.CourseNameNavigation.CourseName
}
}).ToArray()
};
return(new JsonResult(jsonData));
}