objectdatasource“objDs”未能找到不带参数的非泛型方法“GetItems”

Question

   ObjectDataSource objDs = new ObjectDataSource();
            objDs.ID = "objDs";
            objDs.SelectMethod = "GetItems";
            objDs.TypeName = this.GetType().FullName + "," + this.GetType().Assembly.FullName;
            Controls.Add(objDs);
            this.SPGridView1.DataSourceID = "objDs";
            this.SPGridView1.DataBind();        protected DataTable GetItems()
        {
            DataTable dtInfo = new DataTable();
            return dtInfo = GetNodeView(this.mTv.SelectedNode);
        }请高人指点~~~~~~objectdatasource“objDs”未能找到不带参数的非泛型方法“GetItems”是咋回事

Answer 1

ObjectDataSource 里没有不带参数的GetItems方法

Answer 2

？？？不太懂~~GetItems方法是存在的啊，怎么会找不到呢

Answer 3

你的这句代码好像有问题啊... this.GetType().FullName + "," + this.GetType().Assembly.FullName;
只留前面应该就可以了objDs.TypeName = this.GetType().FullName ;

Answer 4

DataTable GetItems()
在那里定义的

Answer 5

是否参数没赋值 
GetNodeView方法是否正确

Answer 6

public DataTable GetItems()
要public

Answer 7

还有个问题就是LZ ,你这样写的目的是什么？这样不就可以绑定数据了... this.SPGridView1.DataSource=GetItems().DefaultView;
 this.SPGridView1.DataBind();

Answer 8

using.....
namespace SPgridview
{
    public class Class1 : System.Web.UI.Page
    {
        protected Label locaLb;
        protected TreeView mTv;
        protected string mPath;
        protected SPGridView SPGridView1;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                TreeBind();
            }
            SpgvBind();
        }
        public void SpgvBind()
        {
            .......
        }
        public void TreeBind()//页面加载 绑定treeview
        {
            ......  
        }
        public DataTable GetDT()//databale数据源
        {
            DataTable mDt = new DataTable();
            mDt.Columns.Add("Title");
            mDt.Columns.Add("Author", typeof(string));
            mDt.Columns.Add("Rating", typeof(string));
            mPath = SPContext.Current.Site.Url;
            using (SPSite mSite = new SPSite(mPath))
            {
                using (SPWeb mWeb = mSite.RootWeb)
                {
                    foreach (SPList spitem in mWeb.Lists)
                    {
                        SPFile mFile;
                        foreach (SPListItem item in spitem.Items)
                        {
                            try
                            {
                                DataRow mDr = mDt.NewRow();
                                mFile = item.File;
                                mDr["Title"] = "IMAGES/" + mFile.IconUrl;
                                mDr["Author"] = mFile.Name.ToString();
                                mDr["Rating"] = mFile.Length.ToString() + " Kb";
                                mDt.Rows.Add(mDr);
                            }
                            catch (Exception ex)
                            {                            }
                        }                    }
                }
            }
            return mDt;
            Cache["mDt"] = mDt;
        }
        protected void mTv_SelectedNodeChanged(object sender, EventArgs e)//treeview单击节点事件
        {
            DataTable mTdt = new DataTable();
            mTdt.Columns.Add("Title");
            mTdt.Columns.Add("Author");
            mTdt.Columns.Add("Rating");
            DataRow mTdr = mTdt.NewRow();            ObjectDataSource objDs = new ObjectDataSource();
            objDs.ID = "objDs";
            objDs.SelectMethod = "GetItems";
            objDs.TypeName = this.GetType().FullName;
            Controls.Add(objDs);
            this.SPGridView1.DataSourceID = "objDs";
            this.SPGridView1.DataBind();
        }
        protected DataTable GetNodeView(TreeNode tnode)//获取treeview节点的详细信息
        {
            DataTable mDt = new DataTable();
            mDt.Columns.Add("Title");
            mDt.Columns.Add("Author", typeof(string));
            mDt.Columns.Add("Rating", typeof(string));
            mPath = SPContext.Current.Site.Url;
            if (tnode.Text == this.mTv.Nodes[0].Text)
            {
                using (SPSite mSite = new SPSite(mPath))
                {
                    using (SPWeb mWeb = mSite.RootWeb)
                    {
                        foreach (SPList item in mWeb.Lists)
                        {
                            SPFile mFile;
                            foreach (SPListItem childitem in item.Items)
                            {
                                try
                                {
                                    DataRow mDr = mDt.NewRow();
                                    mFile = childitem.File;
                                    if (mFile != null)
                                    {
                                        mDr["Title"] = "images/" + mFile.IconUrl;
                                    }
                                    mDr["Author"] = mFile.Name.ToString();
                                    mDr["Rating"] = mFile.Length.ToString() + " kb";
                                    mDt.Rows.Add(mDr);
                                }
                                catch (Exception ex)
                                {                                }
                            }
                        }
                    }
                }
            }
            else
            {
                using (SPSite mSite = new SPSite(mPath))
                {
                    using (SPWeb mWeb = mSite.RootWeb)
                    {
                        foreach (SPList listitem in mWeb.Lists)
                        {
                            if (tnode.Text == listitem.Title)
                            {
                                SPFile mFile;
                                foreach (SPListItem childitem in listitem.Items)
                                {
                                    try
                                    {
                                        DataRow mDr = mDt.NewRow();
                                        mFile = childitem.File;
                                        if (mFile != null)
                                        {
                                            mDr["Title"] = "images/" + mFile.IconUrl;
                                        }
                                        mDr["Author"] = mFile.Name.ToString();
                                        mDr["Rating"] = mFile.Length.ToString() + " kb";
                                        mDt.Rows.Add(mDr);
                                    }
                                    catch (Exception ex)
                                    {                                    }
                                }
                            }
                            else
                            {
                                SPFile mFile;
                                foreach (SPListItem childitem in listitem.Items)
                                {
                                    try
                                    {
                                        if (tnode.Text == childitem.Title)
                                        {
                                            try
                                            {
                                                DataRow mDr = mDt.NewRow();
                                                mFile = childitem.File;
                                                if (mFile != null)
                                                {
                                                    mDr["Title"] = "images/" + mFile.IconUrl;
                                                }
                                                mDr["Author"] = mFile.Name.ToString();
                                                mDr["Rating"] = mFile.Length.ToString() + " kb";
                                                mDt.Rows.Add(mDr);
                                            }
                                            catch (Exception ex)
                                            {                                            }
                                        }
                                        else
                                        {                                        }
                                    }
                                    catch (Exception ex)
                                    {                                    }
                                }
                            }
                        }
                    }
                }
            }
            return mDt;
        }
        protected DataTable GetItems()
        {
            DataTable dtInfo = new DataTable();
            return dtInfo = GetNodeView(this.mTv.SelectedNode);
        }
    }
}完整的代码~~~~
还有一个问题：就是this.SPGridView1.DataSourceID = "objDs"换成this.SPGridView1.DataSource = 数据源;
分页会有问题，但是不会出现题目中的问题~~~~高手请指教

Answer 9

这么写的确能解决这个问题，但是objectdatasource的自动分页变会出错~~~

Answer 10

public string GetItems()
{
    ...
}

Answer 11

Lz 怎么不把数据层单独放到一个类库里ObjectDataSource 是通过反射类来调用方法.Lz你把数据层放页面 然后反射自己调用 这种方法我没用...还有你的ObjectDataSource 控件为什么不在页面上拖个上去然后 使用页面的智能标记来配置这样不容易出错啊!

Answer 12

GetItems 一定要Public！！！！！！！！！！！！！！！！！！！！！！！！！！！！！

Answer 13

objDs.TypeName
这个TypeName的设置是一个类名!!!
楼主设置的什么??看不出!!调用GetItems()方法,一定是在某个类下的,也就是说:
ObjectDataSource的TypeName设置类名;
ObjectDataSource的SelectMethod设置该类下的方法名!!

Answer 14

这个问题呵呵 
用
 protected DataTable GetItems()
        {
            DataTable dtInfo = new DataTable();
            return dtInfo = GetNodeView(this.mTv.SelectedNode);
        }
改成
public DataTable GetItems()
        {
            DataTable dtInfo = new DataTable();
            return dtInfo = GetNodeView(this.mTv.SelectedNode);
        }
就可以了。