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：

View Code

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("Select List For Question :"));
 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("Select List For Result :"));
 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("Question Random :"));
 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("Answer Random :"));
 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("Question Count :"));
 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("Question Remark :"));
 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);
 }