DataSimulation/DataSimulation.Forms/UserControl/CtrlAnt.cs

using DataSimulation.Repostory.Model;
using DevExpress.Utils.Html;
using DevExpress.XtraEditors;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.Entity;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using DataSimulation.Repostory.EFContext;
using DataSimulation.Forms.EditForms;

namespace DataSimulation.Forms.UserControl
{
    public partial class CtrlAnt : DevExpress.XtraEditors.XtraUserControl
    {
        List<AntInfo> list = new List<AntInfo>();
        public CtrlAnt()
        {
            InitializeComponent();
        }
        private async void CtrlAnt_Load(object sender, EventArgs e)
        {
            try
            {
                gridAnt.Init<AntInfo>().UseSort().UseFilter().UseMultiSelect().UseRowNumber();
                gridAnt.DataSource = list;
                using (SimulationContext db = new SimulationContext())
                {
                    var res = db.AntInfos.OrderBy(p => p.AntName);
                    list.AddRange(await res.ToListAsync());
                }
                gridView1.RefreshData();
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "查询天线信息异常");
                DxHelper.MsgBoxHelper.ShowError("查询天线信息异常");
            }
        }
        private void gridView1_PopupMenuShowing(object sender, DevExpress.XtraGrid.Views.Grid.PopupMenuShowingEventArgs e)
        {
            if (gridView1.GetSelectedRows().Any())
            {
                btnDel.Visibility = DevExpress.XtraBars.BarItemVisibility.Always;
                btnEdit.Visibility = DevExpress.XtraBars.BarItemVisibility.Always;
            }
            else
            {
                btnDel.Visibility = DevExpress.XtraBars.BarItemVisibility.Never;
                btnEdit.Visibility = DevExpress.XtraBars.BarItemVisibility.Never;
            }
            popupMenu1.ShowPopup(MousePosition);
        }

        private async void btnAdd_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            try
            {
                AntEditor frm = new AntEditor();
                if (frm.ShowDialog() != DialogResult.OK) return;
                var addItem = frm.info;
                using (SimulationContext db = new SimulationContext())
                {
                    db.AntInfos.Add(addItem);
                    await db.SaveChangesAsync();
                }
                list.Add(addItem);
                gridView1.RefreshData();
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "添加天线信息异常");
                DxHelper.MsgBoxHelper.ShowError("添加天线信息异常");
            }
        }
        private async void btnEdit_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            try
            {
                var editItem = gridView1.GetFocusedRow() as AntInfo;
                AntEditor frm = new AntEditor(editItem);
                if (frm.ShowDialog() != DialogResult.OK) return;
                editItem = frm.info;
                using (SimulationContext db = new SimulationContext())
                {
                    var find = await db.AntInfos.Where(p => p.ID == editItem.ID).FirstOrDefaultAsync();
                    find.AntName = editItem.AntName;
                    find.AntLon = editItem.AntLon;
                    find.AntLat = editItem.AntLat;
                    await db.SaveChangesAsync();
                }
                gridView1.RefreshData();
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "保存天线信息异常");
                DxHelper.MsgBoxHelper.ShowError("保存天线信息异常");
            }
        }
        private async void btnDel_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            try
            {
                if (XtraMessageBox.Show("确认删除选择的天线信息?", "确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes)
                {
                    return;
                }
                var ids = gridView1.GetSelectedRows();

                using (SimulationContext db = new SimulationContext())
                {
                    foreach (var id in ids)
                    {
                        var item = gridView1.GetRow(id) as AntInfo;

                        var delItem = await db.AntInfos.Where(p => p.ID == item.ID).FirstOrDefaultAsync();
                        if (delItem != null)
                            db.AntInfos.Remove(delItem);
                    }
                    await db.SaveChangesAsync();
                }
                gridView1.DeleteSelectedRows();
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "删除天线信息异常");
                DxHelper.MsgBoxHelper.ShowError("删除天线信息异常");
            }
        }
        private void gridView1_CustomDrawEmptyForeground(object sender, DevExpress.XtraGrid.Views.Base.CustomDrawEventArgs e)
        {
            if (gridView1.RowCount == 0)
            {
                string txt = "右键添加天线";
                var s = e.Appearance.CalcTextSize(e.Cache, txt, e.Bounds.Width).ToSize();
                var x = (e.Bounds.Width - s.Width) / 2;
                var y = (e.Bounds.Height - s.Height) / 2;
                e.Appearance.ForeColor = Color.Gray;
                e.Appearance.DrawString(e.Cache, txt, new Rectangle(x, y, s.Width, s.Height));
            }
        }


    }
}