SharePointWebControls帮助类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint.WebControls;
using System.Web.UI.WebControls;
using System.Web.UI;
using Microsoft.SharePoint;

namespace X.WebParts.UploadDocument
{
    class SharePointWebControls
    {
        /// <summary>
        /// 返回控件
        /// </summary>
        public static Control GetSharePointControls(SPField field, SPList list, SPListItem item, SPControlMode mode)
        {
            // 检查是否隐藏
            if (field == null || field.FieldRenderingControl == null || field.Hidden) return null;

            try
            {
                BaseFieldControl webControl = field.FieldRenderingControl;
                webControl.ListId = list.ID;
                webControl.ItemId = item.ID;
                webControl.FieldName = field.Title;
                webControl.ID = GetControlID(field);
                webControl.ControlMode = mode;

                return webControl;
            }
            catch (Exception ex)
            {
                var errorLabel = new Label
                {
                    ID = "ErrorLabel",
                    Text = string.Format("控件错误:<br/>{0}", ex)
                };
                return errorLabel;
            }
        }

        /// <summary>
        /// 返回控件对应的值
        /// </summary>
        public static object GetSharePointControlValue(ControlCollection Controls, SPField field)
        {
            if (Controls == null)
            {
                return null;
            }

            // 控件ID
            string controlID = GetControlID(field);

            foreach (Control control in Controls)
            {
                Control returnObject = control.FindControl(controlID);
                // 取值
                if (returnObject != null && returnObject is BaseFieldControl)
                {
                    return ((BaseFieldControl)returnObject).Value;
                }
            }

            return null;
        }

        /// <summary>
        /// 返回控件对应的值
        /// </summary>
        public static object GetSharePointControlValue(Control Control, string controlID)
        {
            if (Control == null)
            {
                return null;
            }
            Control returnObject = Control.FindControl(controlID);
            if (returnObject != null && returnObject is BaseFieldControl)
            {
                return ((BaseFieldControl)returnObject).Value;
            }

            return null;
        }

        public static Control FindControlRecursive(Control control, string controlID)
        {
            Control returnObject = control.FindControl(controlID);
            return returnObject;
        }

        private static string GetControlID(SPField field)
        {
            // unique id
            return System.Guid.NewGuid().ToString() + field.InternalName;
        }
    }
}