MOSS开发系列之 WebPart的开发技巧（二）

      上一篇写了如何在自定义的WebPart中如何动态的对WebPart配置属性设置进行了阐述，我们做简单的属性配置，但是，开发中往往容易实现的，并不是我们想要的结果，如在上篇文章中描述的，当同时对WebPart配置的时候，及要求有下拉选择框，又要求有简单的文本框输入，这个时候，你就会发现，根本无法将这些操作配置放入到同一个category中。如下图，

 

 

带有下拉选择框的高级配置属性，根本无法与第二张图中的其它属性归属于同一个catepory中。 能不能实现将它们放入同一配置面板中呢？答案是肯定的，能。但是实现起来，不是那么直接了，我们需要变通一下，我们首先要定义一个Panl面板，我们把我们需要的所有属性配置都放在这一个Panl中，然后再将面板加载到衍生的EditorPart类中。这样，我们就可以实现了将所有的自定义配置属性放入一个统一category中了。如下图：

 

以下是后台实现的代码：

 

 EditorPart衍生类

public class ToolPanl : EditorPart

    {

        protected Table tabCategory;

        protected DropDownList dplOptionList;

        protected DropDownList dplResultList;

        protected TextBox txtRemark;

        protected TextBox txtCount;

        protected RadioButtonList rblQuestionRandom;

        protected RadioButtonList rblOptionRandom;



        public ToolPanl()

        {

            this.ID = "pandaToolPanl";            

        }



        public override bool ApplyChanges()

        {

            OnlineLearn pt = WebPartToEdit as OnlineLearn;

            pt.SourceList = this.dplOptionList.SelectedValue;

            pt.ResultList = this.dplResultList.SelectedValue;

            pt.QuestionCount = int.Parse(this.txtCount.Text);

            pt.QuestionRandom = bool.Parse(this.rblQuestionRandom.SelectedValue);

            pt.OptionRandom = bool.Parse(this.rblOptionRandom.SelectedValue);

            pt.QuestionRemark = this.txtRemark.Text;

            return true;

        }



        public override void SyncChanges()

        {            

           EnsureChildControls();

           OnlineLearn pt = WebPartToEdit as OnlineLearn;

           pt.SourceList = this.dplOptionList.SelectedValue;

           pt.ResultList = this.dplResultList.SelectedValue;

           pt.QuestionCount = int.Parse(this.txtCount.Text);

           pt.QuestionRandom = bool.Parse(this.rblQuestionRandom.SelectedValue);

           pt.OptionRandom = bool.Parse(this.rblOptionRandom.SelectedValue);

           pt.QuestionRemark = this.txtRemark.Text;



        }

        protected override void CreateChildControls()

        {

            OnlineLearn pt = WebPartToEdit as OnlineLearn;

            this.tabCategory = new Table();

            this.tabCategory.Width = new Unit("100%");

            TableRow row = new TableRow();

            TableCell cell = new TableCell();



            cell.Controls.Add(new LiteralControl("<b>Select List For Question :</b>"));            

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            this.dplOptionList = new DropDownList();

            this.dplOptionList.ID = "drpOption";

            this.dplOptionList.CssClass = "pd-toolpanl";

            SPListCollection lists= SPContext.Current.Web.Lists;

            foreach (SPList item in lists)

            {

                this.dplOptionList.Items.Add(new ListItem(item.Title));

            }

            this.dplOptionList.SelectedValue = pt.SourceList;

            cell.Controls.Add(dplOptionList);

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            cell.Controls.Add(new LiteralControl("<b>Select List For Result :</b>"));

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            this.dplResultList = new DropDownList();

            this.dplResultList.ID = "dplResult";

            this.dplResultList.CssClass = "pd-toolpanl";

            lists = SPContext.Current.Web.Lists;

            foreach (SPList item in lists)

            {

                this.dplResultList.Items.Add(new ListItem(item.Title));

            }

            this.dplResultList.SelectedValue = pt.ResultList;

            cell.Controls.Add(dplResultList);

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            cell.Controls.Add(new LiteralControl("<b>Question Random :</b>"));

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            this.rblQuestionRandom = new RadioButtonList();

            this.rblQuestionRandom.Items.Add(new ListItem("Yes", "true"));

            this.rblQuestionRandom.Items.Add(new ListItem("No", "false"));

            this.rblQuestionRandom.RepeatDirection = RepeatDirection.Horizontal;

            this.rblQuestionRandom.RepeatLayout = RepeatLayout.Flow;

            this.rblQuestionRandom.SelectedIndex = pt.QuestionRandom ? 0 : 1;          

            cell.Controls.Add(this.rblQuestionRandom);            

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            cell.Controls.Add(new LiteralControl("<b>Answer Random :</b>"));

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            this.rblOptionRandom = new RadioButtonList();

            this.rblOptionRandom.Items.Add(new ListItem("Yes", "true"));

            this.rblOptionRandom.Items.Add(new ListItem("No", "false"));

            this.rblOptionRandom.RepeatDirection = RepeatDirection.Horizontal;

            this.rblOptionRandom.RepeatLayout = RepeatLayout.Flow;

            this.rblOptionRandom.SelectedIndex = pt.OptionRandom ? 0 : 1;

            cell.Controls.Add(this.rblOptionRandom);

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            cell.Controls.Add(new LiteralControl("<b>Question Count :</b>"));            

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            this.txtCount = new TextBox();

            this.txtCount.BorderStyle = BorderStyle.Groove;

            this.txtCount.Width = new Unit(30);

            this.txtCount.Text = pt.QuestionCount.ToString();

            cell.Controls.Add(txtCount);

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            cell.Controls.Add(new LiteralControl("<b>Question Remark :</br>"));

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);



            row = new TableRow();

            cell = new TableCell();

            this.txtRemark = new TextBox();

            this.txtRemark.TextMode = TextBoxMode.MultiLine;

            this.txtRemark.Rows = 4;

            this.txtRemark.BorderStyle = BorderStyle.Groove;

            this.txtRemark.Width = new Unit("80%");

            this.txtRemark.Text = pt.QuestionRemark;

            cell.Controls.Add(txtRemark);

            row.Cells.Add(cell);

            this.tabCategory.Rows.Add(row);           

           

            this.Controls.Add(this.tabCategory);

        }

        protected override void Render(HtmlTextWriter writer)

        {            

            this.tabCategory.RenderControl(writer);

        }

        protected override void OnInit(EventArgs e)

        {

            this.EnsureChildControls();

            base.OnInit(e);

        }