Open DevExpress MVC Grid in Edit Mode with Custom Edit Button - devexpress

Question

I'm using the Devexpress MVC Grid and I've added two custom buttons (Edit & Copy) and I'm performing the operations. With copy button, I'm creating a new record with existing data and opening the grid in Add New Row Mode.
Following is the code:
#Html.DevExpress().GridView(grid =>
{
grid.Name = "gvInformation";
grid.SettingsDetail.AllowOnlyOneMasterRowExpanded = true;
grid.SettingsEditing.Mode = GridViewEditingMode.EditForm;
//Callback Events
grid.CallbackRouteValues = new { Controller = "Case", Action = "InformationGridContent"};
grid.SettingsEditing.AddNewRowRouteValues = new { Controller = "Case", Action = "AddInformationRecord" };
grid.SettingsEditing.UpdateRowRouteValues = new { Controller = "Case", Action = "UpdateInformationRecord" };
grid.SettingsEditing.DeleteRowRouteValues = new { Controller = "Case", Action = "DeleteInformationRecord" };
grid.ClientSideEvents.BeginCallback = "BeginGridCallback";
grid.BeforeGetCallbackResult = (sender, e) =>
{
MVCxGridView gridView = sender as MVCxGridView;
if (isCopyRequired)
gridView.AddNewRow();
if (gridView.IsNewRowEditing)
{
gridView.SettingsText.CommandUpdate = Html.Raw("<span id='btnGridAdd'>Add</span>").ToHtmlString();
gridView.SettingsText.CommandCancel = Html.Raw("<span id='btnGridCancel'>Cancel</span>").ToHtmlString();
}
if (!gridView.IsNewRowEditing)
{
gridView.SettingsText.CommandUpdate = Html.Raw("<span id='btnGridUpdate'>Update</span>").ToHtmlString();
gridView.SettingsText.CommandCancel = Html.Raw("<span id='btnCancel'>Cancel</span>").ToHtmlString();
}
};
//Custom Copy Record Button
var btnCopy = new GridViewCommandColumnCustomButton { ID = "btnCopy" };
btnCopy.Text = "<i class=\"fa fa-copy fa-lg\" title='Copy'></i>";
grid.CommandColumn.CustomButtons.Add(btnCopy);
//Custom Edit Button
var btnEdit = new GridViewCommandColumnCustomButton { ID = "btnEdit" };
btnEdit.Text = "<i class=\"fa fa-pencil fa-lg\" title='Edit'></i>";
grid.CommandColumn.CustomButtons.Add(btnEdit);
//Custom Button Events
grid.ClientSideEvents.CustomButtonClick = "OnCustomButtonClick";
grid.CustomActionRouteValues = new { Controller = "Case", Action = "CustomInformationRecord" };
}
Client Side Events:
var buttonCommand;
function OnCustomButtonClick(s, e) {
buttonCommand = e.buttonID;
s.PerformCallback();
}
function BeginGridCallback(s, e) {
//Grid Edit Button Click Event
if (buttonCommand === "btnEdit") {
e.customArgs["buttonCommand"] = "btnEdit";
}
//Grid Copy Button Click Event
if (buttonCommand === "btnCopy") {
e.customArgs["buttonCommand"] = "btnCopy";
}
}
It is working fine for Copy button and opening the Grid in Edit Form Mode but when Edit Button is clicked it is not opening the Grid in Edit Mode. Is there something I'm missing?