在WinForm下，DEV里面的GridControl控件问题

Question

，设置第一列列为下拉列表，另一列根据第一列选择的结果，决定这列是下拉列表还是文本框，
举例第一列里面选择项有日期和自定义，选择日期，另一列就是下拉列表，里面数据是日期格式的选择，选择自定义，另一列就是可编辑的文本框，可以自由输入

Answer 1

在你的下拉的事件里更改gridview的columntemplate

Answer 2

using DevExpress.XtraEditors.Repository;
using DevExpress.XtraGrid.Columns;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            var cb = new RepositoryItemComboBox();
            cb.Items.Add("");
            gridControl1.RepositoryItems.Add(cb);
            gridView1.Columns.AddRange(new GridColumn[] { new GridColumn() { Caption = "选项", FieldName = "FieldName", ColumnEdit = cb, Visible = true }, new GridColumn() { Caption = "值", FieldName = "Value", Visible = true } });

            var dt = new Source();
            dt.AddField("文本", SqlDbType.NVarChar);
            dt.AddField("日期", SqlDbType.SmallDateTime);
            dt.AddData("");
            dt.AddData("");

            dt.Fields.ForEach(x => { cb.Items.Add(x.FieldName); });
            gridControl1.DataSource = dt.Datas;

            cb.EditValueChanged += (s, e) =>
            {
                dt.Datas[gridView1.GetFocusedDataSourceRowIndex()].Value = null;
            };

            gridView1.CustomRowCellEdit += (s, e) =>
            {
                if (e.Column.FieldName != "Value") return;
                var item = dt.Fields.Find(x =>
                {
                    return x.FieldName == gridView1.GetRowCellValue(e.RowHandle, "FieldName").ToString();
                });
                if (item != null) e.RepositoryItem = item.Editor;
            };
        }
    }

    public partial class Source
    {

        public virtual List<Field> Fields { get; } = new List<Field>();
        public virtual BindingList<Data> Datas { get; set; } = new BindingList<Data>();

        public virtual Data AddData(string fieldname, object value = null)
        {
            var r = new Data(fieldname, value);
            Datas.Add(r);
            return r;
        }

        public virtual Field AddField(string fieldname, SqlDbType type)
        {
            var r = CreateEditor(type);
            if (r != null)
            {
                var f = new Field(fieldname, r);
                Fields.Add(f);
                return f;
            }
            else return null;
        }

        protected virtual RepositoryItem CreateEditor(SqlDbType type)
        {
            if (type == SqlDbType.NVarChar || type == SqlDbType.NChar)
            {
                var edit = new RepositoryItemTextEdit();
                return edit;
            }
            else if (type == SqlDbType.Date || type == SqlDbType.DateTime || type == SqlDbType.SmallDateTime)
            {
                var date = new RepositoryItemDateEdit();
                return date;
            }
            else return null;
        }

        public partial class Field
        {
            public string FieldName { get; set; } = "";

            public RepositoryItem Editor { get; set; } = null;
            public Field() { }
            public Field(string fieldname, RepositoryItem editor)
            {
                FieldName = fieldname;
                Editor = editor;
            }
        }

        public partial class Data : INotifyPropertyChanged
        {
            string _fieldname = "";
            object _value = null;
            public string FieldName
            {
                get { return _fieldname; }
                set
                {
                    _fieldname = value;
                    OnPropertyChanged("FieldName");
                }
            }

            public object Value
            {
                get { return _value; }
                set
                {
                    _value = value;
                    OnPropertyChanged("Value");
                }
            }

            public Data() { }

            public Data(string fieldname, object value)
            {
                _fieldname = fieldname;
                _value = value;
            }

            public event PropertyChangedEventHandler PropertyChanged;
            protected void OnPropertyChanged(string name)
            {
                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
            }
        }
    }
}