La búsqueda de Spquery no funciona con "Beginswith"

Question

Entonces, mi problema es que mi conocimiento de CAML y SharePoint es muy pobre.

Pregunta: Necesito Spquery para la búsqueda de consultas de construcción, texto de búsqueda que tengo desde TextBox. Espero que mi consulta me devuelva elementos (por ejemplo, escribo en el cuadro de texto "Jo" y la consulta me devuelve todos los elementos con el apellido "Johnson", o el nombre "John", etc.)

1) Textchanged funciona bien. Lo revisé, hay bien 2) SpGridView Views Elementos OK. Elementos de Splist Agrego a GridView: hay Viewd por GridView. 3) Pero mi consulta no funciona. Por favor, ayuda con enlaces/asesoramiento

 public class VisualWebPart1 : WebPart
{
    SPSite site;
    SPWeb web;
    SPGridView gridView;
    SPDataSource dataSource;
    TextBox searchTextBox;
    UpdatePanel panel;
    SPList list;
    SPList resultList;

    string currentList;
    // Visual Studio might automatically update this path when you change the Visual Web Part project item.
    private const string _ascxPath = @"~/_CONTROLTEMPLATES/CRMSearchWebPart/VisualWebPart1/VisualWebPart1UserControl.ascx";

    protected override void CreateChildControls()
    {
        gridView = new SPGridView();
        searchTextBox = new TextBox();
        panel = new UpdatePanel();

        searchTextBox.AutoPostBack = true;
        searchTextBox.Visible = true;
        searchTextBox.Enabled = true;
        searchTextBox.TextChanged += new EventHandler(searchTextBox_TextChanged);

        gridView.Visible = true;
        gridView.Enabled = true;
        gridView.AutoGenerateColumns = false;
        AddColumnToSPGridView("Surname", "Surname");

        panel.UpdateMode = UpdatePanelUpdateMode.Conditional;
        panel.ContentTemplateContainer.Controls.Add(searchTextBox);
        panel.ContentTemplateContainer.Controls.Add(gridView);


        Control control = Page.LoadControl(_ascxPath);
        Controls.Add(control);

        Controls.Add(panel);
    }

    protected override void Render(HtmlTextWriter writer)
    {
        panel.RenderControl(writer);
    }

    //Open WebSite with List "listName"
    private void OpenWebSite(string listName)
    {
        site = SPContext.Current.Site;
        web = site.OpenWeb();
        list = web.Lists[listName];
    }

    //Add Column to gridView
    private void AddColumnToSPGridView(string HeaderText, string Datafield)
    {
        SPBoundField boundField = new SPBoundField();
        boundField.HeaderText = HeaderText;
        boundField.DataField = Datafield;
        gridView.Columns.Add(boundField);
    }

    //Build query for search; fieldName - Name of column of current List, searchQuery - our query
    private string BuildQuery(string fieldRefName, string searchQuery)
    {
        string query = "";
        switch (fieldRefName)
        {
            case "Surname":
                query = "<Where><BeginsWith><FieldRef Name='Surname'/>" +
            "<Value Type=Text>"+searchQuery+"</Value></BeginsWith></Where>";
                break;
            case "Name":
                query = query = "<Where><BeginsWith><FieldRef Name='Name'/>" +
            "<Value Type=Text>"+searchQuery+"</Value></BeginsWith></Where>";
                break;
            case "PassportNumber":
                query = "<Where><BeginsWith><FieldRef Name='PassportNumber'/>" +
            "<Value Type=Text>"+searchQuery+"</Value></BeginsWith></Where>";
                break;
            default: break;
        }
        return query;
    }

    // search in List for selected items and returns SPGridView
    private void searchTextBox_TextChanged(object sender, EventArgs e)
    {
        dataSource = new SPDataSource();
        string querySearch = searchTextBox.Text;

        OpenWebSite("Surnames");

        string query = BuildQuery("Surname", querySearch);
        SPQuery spQuery = new SPQuery();
        spQuery.ViewFields = "<FieldRef Name = 'Title'/><FieldRef Name = 'Surname'/><FieldRef Name = 'Name'/>";
        spQuery.Query = query;

        SPListItemCollection items = list.GetItems(query);
        foreach (SPListItem item in items)
        {
            searchTextBox.Text += item["Surname"] + " ";
        }

        //resultList = web.Lists["TempSurnames"];
        //resultList = AddItemsToSPList(resultList, items);
        BindDataSource(dataSource, resultList);
        //resultList = AddSPList("Result2", "Result list");
        //resultList = AddItemsToSPList(resultList, items);
        list = AddItemsToSPList(list, items);
        //BindDataSource(dataSource, resultList);
        BindDataSource(dataSource, list);
        BindGridView(gridView, dataSource);

        //var item = list.Items[3];
        //var item = resultList.Items[1];
        //searchTextBox.Text = item["Surname"].ToString();
        //resultList.Delete();
    }

    //Binds datasource of existing gridView with SPDataSource
    private void BindGridView(SPGridView gridview, SPDataSource datasource)
    {
        gridview.DataSource = datasource;
        gridview.DataBind();
    }

    //Add SPListItem items to SPList
    private SPList AddItemsToSPList(SPList spList, SPListItemCollection collection)
    {
        foreach (SPListItem item in collection)
        {
            var listItem = spList.AddItem();
            listItem = item;
        }
        return spList;
    }

    //Binds existing SPDataSource to SPList
    private void BindDataSource(SPDataSource spDataSource, SPList spList)
    {
        spDataSource.List = spList;
    }

    private SPList AddSPList(string listName, string listDescription)
    {
        OpenWebSite("Surnames");
        SPListCollection collection = web.Lists;
        collection.Add(listName, listDescription, SPListTemplateType.CustomGrid);
        resultList = web.Lists[listName];
        return resultList;
    }

Actualizar:

Esta parte me da un error:

SPListItemCollection items = list.GetItems(query); 
foreach (SPListItem item in items) 
{ 
  searchTextBox.Text += item["Surname"] + " "; 
} 

System.argumentException: el valor no cae dentro del rango esperado

Answer 1

Tienes que incluir el campo Apellido En los campos de vista de la consulta:

SPQuery query = // ...
query.ViewFields = "<FieldRef Name='Surname' />";
// ...

Puedes entender los campos de vista como el SELECT Parte de una consulta SQL.

Answer 2

¿Ha depurado su código para verificar la cadena de consulta que se genera? Además, tiene Query = Query = bajo el Switch Name.

Además, sabe que el conmutador es sensible a las minas, así que asegúrese de ingresar su opción SearchQuery de manera adecuada.