房租管理小软件（五）：控件的使用

1.TextEdit的操作，TextEdit一般设置　Property.Mask 可以控制输入的格式

decimal : 一般用　f2

2.gridlookupEdit,让 数据直接绑定到控件上面，而且有搜索功能

#region 费用代码
this.gridLookUpEdit_FeeCode.Properties.DataSource = from t in dataContext.T1_SY_FeeCode
                                                           select new
                                                           {
                                                               t.AutoID,
                                                               t.NameCN,
                                                               PY = dataContext.fun_getPY(t.NameCN)
                                                           };
            this.gridLookUpEdit_FeeCode.Properties.DisplayMember = "NameCN";
            this.gridLookUpEdit_FeeCode.Properties.ValueMember = "AutoID";
            this.gridLookUpEdit_FeeCode.Properties.View.OptionsView.ShowColumnHeaders = false;
            this.gridLookUpEdit_FeeCode.Properties.TextEditStyle = DevExpress.XtraEditors.Controls.TextEditStyles.Standard;
            this.gridLookUpEdit_FeeCode.Properties.ImmediatePopup = true;
            this.gridLookUpEdit_FeeCode.Properties.AllowNullInput =  DevExpress.Utils.DefaultBoolean.True;
            
            DevExpress.XtraGrid.Columns.GridColumn T1_SY_FeeCode_AutoID = new DevExpress.XtraGrid.Columns.GridColumn();
            T1_SY_FeeCode_AutoID.Caption = "AutoID";
            T1_SY_FeeCode_AutoID.FieldName = "AutoID";
            T1_SY_FeeCode_AutoID.Name = "T1_SY_FeeCode_AutoID";
            T1_SY_FeeCode_AutoID.Visible = true;
            T1_SY_FeeCode_AutoID.VisibleIndex = 0;
            T1_SY_FeeCode_AutoID.Width = 122;

            DevExpress.XtraGrid.Columns.GridColumn T1_SY_FeeCode_NameCN = new DevExpress.XtraGrid.Columns.GridColumn();
            T1_SY_FeeCode_NameCN.Caption = "NameCN";
            T1_SY_FeeCode_NameCN.FieldName = "NameCN";
            T1_SY_FeeCode_NameCN.Name = "T1_SY_FeeCode_NameCN";
            T1_SY_FeeCode_NameCN.Visible = true;
            T1_SY_FeeCode_NameCN.VisibleIndex = 0;
            T1_SY_FeeCode_NameCN.Width = 122;


            DevExpress.XtraGrid.Columns.GridColumn T1_SY_FeeCode_PY = new DevExpress.XtraGrid.Columns.GridColumn();
            T1_SY_FeeCode_PY .Caption = "PY";
            T1_SY_FeeCode_PY .FieldName = "PY";
            T1_SY_FeeCode_PY .Name = "T1_SY_FeeCode_PY";
            T1_SY_FeeCode_PY .Visible = false;
            T1_SY_FeeCode_PY .VisibleIndex = 0;
            T1_SY_FeeCode_PY .Width = 122;



            this.gridLookUpEdit_FeeCode.Properties.View.Columns.Add(T1_SY_FeeCode_AutoID);
            this.gridLookUpEdit_FeeCode.Properties.View.Columns.Add(T1_SY_FeeCode_PY);
            this.gridLookUpEdit_FeeCode.Properties.View.Columns.Add(T1_SY_FeeCode_NameCN);
            T1_SY_FeeCode_PY.Visible = false;

            this.gridLookUpEdit_FeeCode.EditValueChanging += new DevExpress.XtraEditors.Controls.ChangingEventHandler(delegate(object sender, DevExpress.XtraEditors.Controls.ChangingEventArgs e)
            {
                this.BeginInvoke(new System.Windows.Forms.MethodInvoker(delegate
                {

                    GridLookUpEdit edit = sender as GridLookUpEdit;
                    GridView gridView = edit.Properties.View as GridView;
                    FieldInfo fi = gridView.GetType().GetField("extraFilter", BindingFlags.NonPublic | BindingFlags.Instance);
                    CriteriaOperator[] ca = new CriteriaOperator[gridView.Columns.Count];

                    for (int i = 0; i < gridView.Columns.Count; i++)
                    {
                        BinaryOperator op1 = new BinaryOperator(gridView.Columns[i].FieldName, edit.Text + "%", BinaryOperatorType.Like);
                        ca[i] = op1;
                    }

                    string filterCondition = new GroupOperator(GroupOperatorType.Or, ca).ToString();
                    fi.SetValue(gridView, filterCondition);
                    MethodInfo mi = gridView.GetType().GetMethod("ApplyColumnsFilterEx", BindingFlags.NonPublic | BindingFlags.Instance);
                    mi.Invoke(gridView, null);

                }));
            }
                );
            this.gridLookUpEdit_FeeCode.KeyDown += new System.Windows.Forms.KeyEventHandler(delegate(object sender, KeyEventArgs e)
            {
                GridLookUpEdit edit = sender as GridLookUpEdit;
                if (e.KeyData.ToString() == "Return" && edit.IsPopupOpen == false && edit.EditValue != "" && edit.EditValue != null)
                {
                    SendKeys.Send("{Tab}");
                }
            });
            
            this.gridLookUpEdit_FeeCode.Properties.ButtonClick += new DevExpress.XtraEditors.Controls.ButtonPressedEventHandler(delegate(object sender, DevExpress.XtraEditors.Controls.ButtonPressedEventArgs e)
            {
                if (e.Button.Kind == DevExpress.XtraEditors.Controls.ButtonPredefines.Combo) { }

                if (e.Button.Kind == DevExpress.XtraEditors.Controls.ButtonPredefines.Delete) { 
                    (sender as GridLookUpEdit).Focus(); SendKeys.Send("^{DEL}"); }

            });
            #endregion

3.在gridControl 中使用内置控件显示（RepositoryItemLookUpEdit）

 #region 人员
            DevExpress.XtraEditors.Repository.RepositoryItemLookUpEdit repositoryItemLookUpEdit_User = new DevExpress.XtraEditors.Repository.RepositoryItemLookUpEdit();
            this.colT2_JZ_CarryOverStock.ColumnEdit =  repositoryItemLookUpEdit_User;
            repositoryItemLookUpEdit_User.AutoHeight = false;
            repositoryItemLookUpEdit_User.Name = "repositoryItemLookUpEdit_User";
            repositoryItemLookUpEdit_User.Columns.Add(new DevExpress.XtraEditors.Controls.LookUpColumnInfo("UserID"));
            repositoryItemLookUpEdit_User.Columns.Add(new DevExpress.XtraEditors.Controls.LookUpColumnInfo("UserName"));
            repositoryItemLookUpEdit_User.DataSource = from t in dataContext.T1_QX_MySystemUser
                                                           select new
                                                           {
                                                               t.UserID,
                                                               t.UserName
                                                           };
            repositoryItemLookUpEdit_User.DisplayMember = "UserName";
            repositoryItemLookUpEdit_User.ValueMember = "UserID";
            repositoryItemLookUpEdit_User.ShowHeader = false;
            repositoryItemLookUpEdit_User.NullText = "";
            #endregion

4.gridcontrol 中为0 则不显示：
this.gridColumn_Amount.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Numeric;
this.gridColumn_Amount.DisplayFormat.FormatString = "{0:#.00;-#.00;''}";

5.gridcontol 中分行的状态进行控制颜色，选中状态等

private void gridView1_CustomRowCellEdit(object sender, CustomRowCellEditEventArgs e)
        {
            
            try
            {
                if (e.Column.FieldName != "Check") return;
                
                if (e.RowHandle > -1)
                {
                    Object os = this.dt_ZW.Rows[e.RowHandle]["Status"];
                    if (os != null)
                    {
                        string s_Status = os.ToString();//状态
                        if (s_Status == "已结" || s_Status == "冲抵") { e.RepositoryItem = repositoryItemCheckEdit2; }//不能选中
                        else
                        {
                            e.RepositoryItem = repositoryItemCheckEdit1;
                        }
                    }
                }
            }
            catch (Exception ex) { }
        }

        

        private void gridView1_RowCellStyle(object sender, RowCellStyleEventArgs e)
        {
            GridView view = sender as GridView;
            Object os = view.GetRowCellDisplayText(e.RowHandle, this.gridColumn_Status);
            if (os != null)
            {
                string s_Status = os.ToString();//状态
                if (s_Status == "已结") { e.Appearance.ForeColor = SystemColors.GrayText; }
                if (s_Status == "冲抵") { e.Appearance.ForeColor = Color.Red; }
            }

            Object FAmount = view.GetRowCellDisplayText(e.RowHandle, this.gridColumn_FAmount);
            if (FAmount != null && FAmount.ToString() != "")
            {

                decimal s_FAmount = decimal.Parse(FAmount.ToString());//状态
                if (s_FAmount < 0 && e.Column.FieldName == "FAmount") { e.Appearance.ForeColor = Color.Red; }

            }

            Object Amount = view.GetRowCellDisplayText(e.RowHandle, this.gridColumn_Amount);
            if (Amount != null && Amount.ToString() != "")
            {
                decimal s_Amount = decimal.Parse(Amount.ToString());//状态
                if (s_Amount < 0 && e.Column.FieldName == "Amount") { e.Appearance.ForeColor = Color.Red; }

            }

        }

       
        private void gridView1_ShowingEditor(object sender, CancelEventArgs e)
        {
            GridView view = sender as GridView;

            string s_Status = view.GetFocusedRowCellDisplayText(this.gridColumn_Status);//状态
            
            
            if (s_Status == "已结") { e.Cancel = true; }
            if (s_Status == "冲抵") { e.Cancel = true; }
            if (view.FocusedColumn.FieldName != "Check") { e.Cancel = true; }//只有check可编辑
        }