WinForm------給GridControl添加搜索功能

 

//按鈕點擊事件

private void Btn_Search_Click(object sender, EventArgs e)
        {
            //獲取編輯框的值
            string text = this.textEdit1.Text;

            ColumnView view = (ColumnView)UserManagementGrid.FocusedView;
            GridColumn column = null;

            //判斷是否為空
            if (!text.Equals(""))
            {
                //判斷首個字符是否是英文
                if ((text[0] > 'a' && text[0] < 'z') || (text[0] > 'A' && text[0] < 'Z'))
                {
                    //英文(UserName為數據庫里面的列名,TrueName同理)
                    column = view.Columns["UserName"];
                }
                else
                {
                    //不是英文
                    column = view.Columns["TrueName"];
                }
            }
            else
            {
                ShowInfo("請輸入用戶名或姓名!");
            }

            if (column != null)
            {
                int rhFound = 0;
                //從第0行開始查詢,查詢的列,匹配列中的值
                rhFound = view.LocateByDisplayText(0, column, text);

                //如果行值正常,即條件滿足，存在
                if (rhFound != DevExpress.XtraGrid.GridControl.InvalidRowHandle)
                {
                    view.FocusedRowHandle = rhFound;
                    view.FocusedColumn = column;
                    view.SelectRow(rhFound);
                }
                else
                {
                    ShowInfo("無此用戶名或姓名!");
                }
            }

        }

        /// <summary>
        /// 行風格設置
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void UserManagementView_RowCellStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowCellStyleEventArgs e)
        {
            //如果行不是焦點行，則背景色為白色
            if (e.RowHandle != UserManagementView.FocusedRowHandle)
            {
                e.Appearance.BackColor = Color.White;
            }

        }

 

方法二：

通過特定列的值搜索

public List<Users> GetUsersByShowText(string text)
{
 　　return _db.Users.Where(p => p.UName.Contains(text) || p.TrueName.Contains(text)).ToList();
}