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我是新的SharePoint的開發人員，並試圖創建搜索webpart窗口sharepoint服務3.0 [免費版]，到目前爲止，我可以從列表框中選擇多個項目，但是當我試圖顯示選定的項目到文本框它迷路了。選擇的項目在回發丟失[Sharepoint wss3.0 webpart]
我會在這個問題上appriciate任何一個迴應，並可以指出我的錯誤，因爲這個問題有點迫切任何人都可以幫助我請。
感謝
下面是我的代碼對你的專家審查並請讓我知道我錯了。
using System;
using System.Runtime.InteropServices;
using System.Data;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Drawing;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.WebControls;
using Microsoft.SharePoint.WebPartPages;
using System.Xml.Serialization;
using System.Collections;
namespace Filter_WebPart
{
[Guid("6641a7a3-d2c4-4fda-9ef5-89596845bd6e")]
public class Filter_WebPart : System.Web.UI.WebControls.WebParts.WebPart
{
protected DataSet _dataset;
protected ListBox lstRegion;
protected ListBox lstMaterial;
protected HtmlButton btnSubmit;
protected HtmlInputText txtDisplay;
private string myExceptions = "";
//private int[] Index1;
protected override void CreateChildControls()
{
try
{
//Region Table/DataSet
lstRegion = new ListBox();
lstRegion.ID="lstRegion";
lstRegion.SelectionMode = ListSelectionMode.Multiple;
//lstRegion.EnableViewState = true;
//lstRegion.SelectedIndex = 0;
//Material Table/DataSet
lstMaterial = new ListBox();
lstMaterial.SelectionMode = ListSelectionMode.Multiple;
lstMaterial.EnableViewState = true;
btnSubmit = new HtmlButton();
btnSubmit.InnerText = "Filter";
btnSubmit.ServerClick += new EventHandler(btnSubmit_Click);
txtDisplay = new HtmlInputText();
//CommandButton
this.Controls.Add(lstRegion);
this.Controls.Add(lstMaterial);
this.Controls.Add(btnSubmit);
this.Controls.Add(txtDisplay);
}
catch(Exception ChildControlException)
{
myExceptions += "ChildControlException:" + ChildControlException.Message;
}
finally
{
//base.CreateChildControls();
}
}
protected override void OnPreRender(EventArgs e)
{
if(!this.Page.IsPostBack)
{
lstMaterial.DataSource = GetMaterialList();
lstMaterial.DataTextField = "Material Name";
lstMaterial.DataValueField = "Material Name";
lstMaterial.DataBind();
lstRegion.DataSource = GetRegionList();
lstRegion.DataTextField = "Region Name";
lstRegion.DataValueField = "Region Name";
lstRegion.DataBind();
txtDisplay.Value="1 time";
}
base.OnPreRender(e);
}
void btnSubmit_Click(object sender, EventArgs e)
{
string tmpStr="";
int k=0;
//int i=0;
lstMaterial.DataBind();
lstRegion.DataBind();
//int[] indx = lstRegion.GetSelectedIndices();
//for(i=0;i<indx.Length;i++)
//{
// tmpStr = tmpStr+","+lstRegion.Items[indx[i]].Text;
//}
//if(lstRegion.SelectedIndex >=0)
//{
//for(i=0;i < lstRegion.Items.Count;i++)
//{
// //if(i==5 || i==10)
// //{
// // lstRegion.Items[i].Selected = true;
// //}
// if(lstRegion.Items[i].Selected)
// {
// tmpStr = lstRegion.Items[i].Text;
// }
// k=k+1;
//}
//}
foreach(ListItem RgItem in lstRegion.Items)
{
if(RgItem.Selected == true)
{
tmpStr = tmpStr +","+RgItem.Text;
k=k+1;
}
}
//for(i=0;i<lstRegion.Items.Count;i++)
//{
// if(lstRegion.Items[i].Selected == true)
// {
// txtDisplay.Value = txtDisplay.Value +","+lstRegion.Items[i].Text;
// k=k+1;
// }
//}
if(tmpStr != "")
{txtDisplay.Value = tmpStr;}
else{
txtDisplay.Value = k.ToString();
btnSubmit.InnerText = "Done";}
}
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
EnsureChildControls();
}
private DataSet GetRegionList()
{
_dataset = new DataSet();
DataTable _tbl = new DataTable();
DataColumn _tblcol = new DataColumn("Region Name");
_tbl.Columns.Add(_tblcol);
SPWeb web = SPContext.Current.Site.RootWeb;
SPList myList = web.Lists["Service Area"];
SPQuery query = new SPQuery();
query.Query = "";
SPListItemCollection items = myList.GetItems(query);
foreach (SPListItem item in items)
{
DataRow _row = _tbl.NewRow();
_row[0] = SPEncode.HtmlEncode(item["Region Name"].ToString());
_tbl.Rows.Add(_row);
}
_dataset.Tables.Add(_tbl);
return _dataset;
}
private DataSet GetMaterialList()
{
_dataset = new DataSet();
DataTable _tbl = new DataTable();
DataColumn _tblcol = new DataColumn("Material Name");
_tbl.Columns.Add(_tblcol);
SPWeb web = SPContext.Current.Site.RootWeb;
SPList myList = web.Lists["Material Master"];
SPQuery query = new SPQuery();
query.Query = "";
SPListItemCollection items = myList.GetItems(query);
foreach (SPListItem item in items)
{
DataRow _row = _tbl.NewRow();
_row[0] = SPEncode.HtmlEncode(item["Material Name"].ToString());
_tbl.Rows.Add(_row);
}
_dataset.Tables.Add(_tbl);
return _dataset;
}
protected override void RenderContents(HtmlTextWriter output)
{
try
{
this.EnsureChildControls();
lstRegion.RenderControl(output);
lstMaterial.RenderControl(output);
btnSubmit.RenderControl(output);
output.Write("<br>");
txtDisplay.RenderControl(output);
//base.RenderContents(output);
}
catch (Exception RenderContentsException)
{
myExceptions += "RenderException:" + RenderContentsException.Message;
}
finally
{
if (myExceptions.Length > 0)
{
output.WriteLine(myExceptions);
}
}
}
}
}