SharePoint Web 部件中的单选按钮事件不起作用

Question

我正在尝试创建一个搜索工具。它可以搜索并在我的搜索按钮单击时做出反应。我添加了一些单选按钮，用户可以用来设置一些设置。每次更改选中的单选按钮时，我都希望 web 部件进行新的搜索，但这是我无法开始工作的。

我尝试按照this answer 中的说明进行操作，但没有帮助。

这是我的代码

public class HelloWorld : Microsoft.SharePoint.WebPartPages.WebPart
{
    Button btn;
    TextBox textBx;
    string _myProperty = "";
    DataTable resultsDataTable = new DataTable();
    RadioButton exactSearch;
    RadioButton wildSearch;

    [Personalizable(PersonalizationScope.Shared)]
    [WebBrowsable(true)]
    [System.ComponentModel.Category("My Property Group")]
    [WebDisplayName("MyProperty")]
    [WebDescription("Meaningless Property")]
    public string MyProperty
    {
        get
        {
            if (_myProperty == null)
            {
                _myProperty = "Hello SharePoint";
            }
            return _myProperty;
        }
        set { _myProperty = value; }
    }

    protected override void CreateChildControls()
    {
        base.CreateChildControls();

        textBx = new TextBox();
        textBx.Text = "";

        btn = new Button();
        btn.Text = "Search";

        exactSearch = new RadioButton();
        exactSearch.GroupName = "searchSetting";
        exactSearch.Checked = false;

        wildSearch = new RadioButton();
        wildSearch.GroupName = "searchSetting";
        wildSearch.Checked = true;

        //Events
        btn.Click += new EventHandler(btn_Click);
        wildSearch.CheckedChanged += new EventHandler(wildSearch_CheckedChanged);

        //Adding to controls
        this.Controls.Add(btn);
        this.Controls.Add(textBx);
        this.Controls.Add(exactSearch);
        this.Controls.Add(wildSearch);
    }

    void wildSearch_CheckedChanged(object sender, EventArgs e)
    {
        search();
    }

    void btn_Click(object sender, EventArgs e)
    {
        search();
    }

    protected override void Render(HtmlTextWriter writer)
    {
        //Title
        writer.Write("Super Lookup Service <br/>");

        //Search block
        textBx.RenderControl(writer);
        writer.Write("&nbsp;&nbsp;");
        btn.RenderControl(writer);
        writer.Write("<br/>");
        writer.Write("Exact Search ");
        exactSearch.RenderControl(writer);
        writer.Write("&nbsp;&nbsp;");
        writer.Write("Wild Search ");
        wildSearch.RenderControl(writer);
        writer.Write("<br/><br/>");

        //Search results
        if (resultsDataTable.Rows.Count > 0)
        {
            writer.Write("<b> {0} Results:</b><br/>", resultsDataTable.Rows.Count);
            foreach (DataRow row in resultsDataTable.Rows)
            {
                writer.Write("<a href=\"{0}\">{1}</a> ({2}) - size: {3}<br/>", row["path"].ToString(), row["title"].ToString(), row["author"].ToString(), row["Size"].ToString());
            }
        }

        else
        {
            writer.Write("<b>0 Results:</b>");
        }
    }

    private void search()
    {
        using (SPSite site = new SPSite(SPContext.Current.Site.ID))
        {
            FullTextSqlQuery query = new FullTextSqlQuery(site);
            string queryText = "";

            if (wildSearch.Checked == true)
            {
                queryText = "SELECT title, path, author, Size from Scope() where title LIKE '%" + textBx.Text + "%' order by title asc ";
            }
            else if (exactSearch.Checked == true)
            {
                queryText = "SELECT title, path, author, Size from Scope() where title = '" + textBx.Text + "' order by title asc ";
            }

            query.QueryText = queryText;
            query.ResultTypes = ResultType.RelevantResults;
            query.RowLimit = 3000;

            ResultTableCollection resultTables = query.Execute();
            if (resultTables.Count > 0)
            {
                ResultTable relevantResults = resultTables[ResultType.RelevantResults];
                resultsDataTable.Load(relevantResults, LoadOption.OverwriteChanges);
            }
        }
    }
}

希望你能帮助我。

BR

Answer 1

在 OnCreateChildControl 上创建单选按钮时，您必须将单选按钮的 AutoPostBack 属性设置为 true，否则它不会回发并且不会触发事件。

wildSearch.AutoPostBack = true;