Getting exception StartEdit on DevExpress Grid - asp.net-mvc

Question

I have a patial view with following code(with custom data binding):
Partial View
#{
Html.EnableClientValidation();
Html.EnableUnobtrusiveJavaScript();
var grid = Html.DevExpress().GridView(settings => {
settings.Name = "GridView1";
settings.KeyFieldName = "StudentId";
settings.CallbackRouteValues = new { Controller = "CustomBinding", Action = "MyGridViewPartial" };
settings.CustomActionRouteValues = new { Controller = "Editing", Action = "ChangeEditModePartial" };
settings.SettingsEditing.AddNewRowRouteValues = new { Controller = "CustomBinding", Action = "GridView1PartialAddNew" };
settings.SettingsEditing.UpdateRowRouteValues = new { Controller = "CustomBinding", Action = "GridView1PartialUpdate" };
settings.SettingsEditing.DeleteRowRouteValues = new { Controller = "CustomBinding", Action = "GridView1PartialDelete" };
settings.SettingsEditing.Mode = GridViewEditingMode.EditFormAndDisplayRow;
settings.SettingsBehavior.ConfirmDelete = true;
settings.SettingsPopup.EditForm.Width = 600;
settings.CommandColumn.Visible = true;
settings.CommandColumn.ShowNewButton = true;
settings.CommandColumn.ShowDeleteButton = true;
settings.CommandColumn.ShowEditButton = true;
settings.CustomBindingRouteValuesCollection.Add(
GridViewOperationType.Paging,
new { Controller = "MyController", Action = "MyPagingAction" }
);
settings.CustomBindingRouteValuesCollection.Add(
GridViewOperationType.Sorting,
new { Controller = "MyController", Action = "MySortingAction" }
);
settings.SettingsAdaptivity.AdaptivityMode = GridViewAdaptivityMode.Off;
settings.SettingsAdaptivity.AdaptiveColumnPosition = GridViewAdaptiveColumnPosition.Left;
settings.SettingsAdaptivity.AdaptiveDetailColumnCount = 1;
settings.SettingsAdaptivity.AllowOnlyOneAdaptiveDetailExpanded = false;
settings.SettingsAdaptivity.HideDataCellsAtWindowInnerWidth = 0;
settings.Columns.Add("StudentId");
settings.Columns.Add("StudentName");
settings.Columns.Add("StudentAge");
settings.Columns.Add("StudentGrade");
settings.Columns.Add("StudentAddress");
settings.PreRender = (sender, e) =>
{
((MVCxGridView)sender).StartEdit(0);/**//This is the Exception line**
};
settings.CellEditorInitialize = (s, e) =>
{
ASPxEdit editor = (ASPxEdit)e.Editor;
editor.ValidationSettings.Display = Display.Dynamic;
};
});
if (ViewData["EditError"] != null){
grid.SetEditErrorText((string)ViewData["EditError"]);
}
}
#grid.BindToCustomData(Model).GetHtml()///Custom binding
Please suggest the solutions:
Exception:
A primary key field specified via the KeyFieldName property is not found in the underlying data source. Make sure the field name is spelled correctly. Pay attention to the character case.

Answer 1

Are you sure that the Model contains (StudentId) property and you retrieve it from db successfully and also it is public with getter and setter