Repeater中ItemTemplate中的linbutton的问题.请高手帮忙!

Question

写在ItemDataBind事件里面
可以用(LinkButton)e.Items[i].FindControl("reply")

Answer 1

555555555protected void ItemDataBind(Object sender, EventArgs e)
    {
     for (int i = 0; i < repeater1.Items.Count; i++)
      {          LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
    
      }
    }初学...
不晓得这样写错了吗?
但是这个e.里面没有items[]....55555  再请高手帮忙看看..谢谢...

Answer 2

就是一个好简单的留言本...前面不是repeater...管理里面要删除回复...我把代码都贴出来好吗?  55555using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack)
        {
        dlBind();
        admin();
        }    }
    protected void dlBind()
    {
        string strcon = ConfigurationSettings.AppSettings["strcon"];
        int curpage = Convert.ToInt32(this.labpage.Text);
        PagedDataSource ps = new PagedDataSource();
        SqlConnection sqlcon = new SqlConnection(strcon);
        sqlcon.Open();
        string sqlstr = "select * from netbook order by id desc";
        SqlDataAdapter myda = new SqlDataAdapter(sqlstr,strcon);
        DataSet myds = new DataSet();
        myda.Fill(myds, "netbook");
        ps.DataSource = myds.Tables["netbook"].DefaultView;
        ps.AllowPaging = true;
        ps.PageSize = 3;
        ps.CurrentPageIndex = curpage - 1;
        this.perv.Enabled = true;
        this.next.Enabled = true;
        this.frist.Enabled = true;
        this.last.Enabled = true;
        
        if (curpage == 1)
        {
            this.frist.Enabled = false;
            this.perv.Enabled = false;
        }
        if (curpage == ps.PageCount)
        {
            this.next.Enabled = false;
            this.last.Enabled = false;
        }
        this.backpage.Text = Convert.ToString(ps.PageCount);
        this.repeater1.DataSource = ps;
        this.repeater1.DataBind();
        sqlcon.Close();
    }
    protected void frist_Click(object sender, EventArgs e)
    {
        this.labpage.Text = "1";
        dlBind();
        admin();
    }
    protected void perv_Click(object sender, EventArgs e)
    {
        this.labpage.Text = Convert.ToString(Convert.ToInt32(this.labpage.Text) - 1);
        dlBind();
        admin();
    }
    protected void next_Click(object sender, EventArgs e)
    {
        this.labpage.Text = Convert.ToString(Convert.ToInt32(this.labpage.Text) + 1);
        dlBind();
        admin();
    }
    protected void last_Click(object sender, EventArgs e)
    {
        this.labpage.Text = this.backpage.Text;
        dlBind();
        admin();
        
    }
    protected void delete_click(object sender, EventArgs e)    {
        string strcon = ConfigurationSettings.AppSettings["strcon"];
        SqlConnection conn = new SqlConnection(strcon);
        conn.Open();
        admin();
        for (int l = 0; l < repeater1.Items.Count; l++)
        {
            HiddenField bb = (HiddenField)repeater1.Items[l].FindControl("HiddenField1");
            SqlCommand com = new SqlCommand("delete from netbook where id="+bb.Value+"",conn);
            com.ExecuteNonQuery();            
        }
        conn.Close();     
        Response.Write("<script>alert('删除成功!')</script>");
        dlBind();
    }
    protected void ItemDataBind(Object sender, EventArgs e)
    {
        for(int l=0;l<)
     for (int i = 0; i < repeater1.Items.Count; i++)
      {          LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
    
      }
    }    public void admin()
    {
        if (Session["username"] == null)
        {
            login.Text = "登录";
            login.PostBackUrl = "login.aspx";
            for (int i = 0; i < repeater1.Items.Count; i++)
            {
                Button aa = (Button)repeater1.Items[i].FindControl("delete_but");
                aa.Visible = false;
            }                                 
        }
        else
        {
            login.Text = "退出登录";
            login.PostBackUrl = "oulogin.aspx";
            for (int i = 0; i < repeater1.Items.Count; i++)
            {
                LinkButton lk = (LinkButton)repeater1.Items[i].FindControl("reply");
                Button aa = (Button)repeater1.Items[i].FindControl("delete_but");
                aa.Text = "删除";                aa.Attributes.Add("onclick", "javascript:return(confirm('确实删除吗?'))");
                aa.PostBackUrl = "delete.aspx";
                lk.Text = "回复";
                for (int l = 0; l < repeater1.Items.Count; l++)
                {
                    HiddenField bb = (HiddenField)repeater1.Items[l].FindControl("HiddenField1");
                    lk.PostBackUrl = "rely.aspx?cid="+bb.Value;
                }
            }
        }
    }
}

Answer 3

<asp:Button ID="delete_but" CommandArgument='<%#DataBinder.Eval(Container.DataItem, "id")%>' CommandName="Delete_but" runat="server"></asp:Button>前台CS if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)//单个审核
            {
                if (e.CommandName == "Delete_but")
                {
                     操作.....
                }
             }

Answer 4

就是不能得到唯一的ID.....for一循环整个页面ID都for 了一下..删除就都删除了...5555

Answer 5

if (e.CommandName == "Delete_but")
                {
                     int ID=int.Parse(e.CommandArgument.ToString());
                     操作.....
                }

Answer 6

这个e  打点..为什么后面没有item?  5555

Answer 7

protected void repeater1_ItemDataBind(Object sender, EventArgs e)
    {
     for (int i = 0; i < repeater1.Items.Count; i++)
      {          LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
    
      }
    }这样就有了

Answer 8

这样还是不行...但是:这样
 Button aa = (Button)repeater1.Items[i].FindControl("delete_but");就有了...这是什么原因.

Answer 9

protected void Repeater1_ItemDataBind(Object sender, EventArgs e)
    {
          
     for (int i = 0; i < repeater1.Items.Count; i++)
      {          LinkButton bb = (LinkButton)repeater1.Items[i].FindControl("delete_but");
    
      }这样才出来... 55555是不是前台有一个HiddenField这个的原因了?

Answer 10

(Button)repeater1.Items[i].FindControl
指定查找repeater1里面的BUtton项

Answer 11

<asp:HiddenField ID="HiddenField1" runat="server"  Value='<%#DataBinder.Eval(Container.DataItem, "id")%>' Visible="false" />前台我用一个HiDDenField 存ID号...
CS中..
for (int l = 0; l < repeater1.Items.Count; l++)
 {
     HiddenField bb = (HiddenField)repeater1.Items[l].FindControl("HiddenField1");
      lk.PostBackUrl = "rely.aspx?cid="+bb.Value;
      }但是这不是唯一的...就是一页有好多就循环好多..那样.删除或者回复..就找不到要想的ID..删除会都这页都删除掉..

Answer 12

不管HiddenField的事
前面是这样
protected void ItemDataBind(Object sender, EventArgs e)
    {
     for (int i = 0; i < repeater1.Items.Count; i++)
      {          LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
    
      }
    }后面是这样  自己对照
protected void repeater1_ItemDataBind(Object sender, EventArgs e)
    {
     for (int i = 0; i < repeater1.Items.Count; i++)
      {          LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
    
      }
    }

Answer 13

你要点repeater，找到它的属性，按那个闪电图标（表示事件），找到ItemDataBound，双击...........
双击后会自动跳到后台代码的，然后把填在那里面

Answer 14

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {
        for (int i = 0; i < repeater1.Items.Count; i++)
        {            LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)//单个审核
            {
                if (e.CommandName == "Delete_but")
                {
                    string strcon = ConfigurationSettings.AppSettings["strcon"];
                    SqlConnection conn = new SqlConnection(strcon);
                    conn.Open();
                    SqlCommand com = new SqlCommand("delete from netbook where id=" + bb.Value + "", conn);
                    com.ExecuteNonQuery();
                    conn.Close();
                    Response.Write("<script>alert('删除成功!')</script>");
                    dlBind();                }
            }
        }    }错误是:
源错误: 行 88:         {
行 89: 
行 90:             LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
行 91:             if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)//单个审核
行 92:             {
 
那个e打点还是不出来..

Answer 15

.aspx文件
<asp:Repeater ID="repeater1" runat="server">    
  <ItemTemplate>  
  <asp:Button ID="delete_but" runat="server" CommandName＝"delete"  CommandArgument＝ '<%#Eval("id")%>'OnClick="delete_click"></asp:Button>
  </ItemTemplate> 
.cs文件 Repeater的RowCommand事件中
if (e.CommandName == "delete")
                {
                     int ID=int.Parse(e.CommandArgument.ToString());
                     .....
                }

Answer 16

给你说了放在Repeater1_ItemCommandprotected void Repeater1_ItemCommand(object sender, RepeaterItemEventArgs e)
    {
                        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)//单个审核
            {
 for (int i = 0; i < repeater1.Items.Count; i++)
        {
LinkButton bb = (LinkButton)e.Items[i].FindControl("reply");
}
                if (e.CommandName == "Delete_but")
                {
                    string strcon = ConfigurationSettings.AppSettings["strcon"];
                    SqlConnection conn = new SqlConnection(strcon);
                    conn.Open();
                    SqlCommand com = new SqlCommand("delete from netbook where id=" + bb.Value + "", conn);
                    com.ExecuteNonQuery();
                    conn.Close();
                    Response.Write("<script>alert('删除成功!')</script>");
                    dlBind();                }
            }
            }

Answer 17

你编译一下代码，把错误show出来

Answer 18

这样就简单了,循环做什么 单击一个删一个protected void Repeater1_ItemCommand(object sender, RepeaterItemEventArgs e)
    {
       if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
        if (e.CommandName == "Delete_but")
                {
                    int bb=int.Parse(e.CommandArgument.ToString());
                    string strcon = ConfigurationSettings.AppSettings["strcon"];
                    SqlConnection conn = new SqlConnection(strcon);
                    conn.Open();
                    SqlCommand com = new SqlCommand("delete from netbook where id=" + bb+ "", conn);
                    com.ExecuteNonQuery();
                    conn.Close();
                    Response.Write("<script>alert('删除成功!')</script>");
                    dlBind();
                }
            }    }

Answer 19

protected void Repeater1_ItemDataBound(object source, System.Web.UI.WebControls.RepeaterCommandEventArgs e)
    {
        LinkButton bb = (LinkButton)e.Item.FindControl("reply");
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)//单个审核
        {
            if (e.CommandName == "Delete_but")
            {
                string strcon = ConfigurationSettings.AppSettings["strcon"];
                SqlConnection conn = new SqlConnection(strcon);
                conn.Open();
                SqlCommand com = new SqlCommand("delete from netbook where id=" + bb.Text + "", conn);
                com.ExecuteNonQuery();
                conn.Close();
                Response.Write("<script>alert('删除成功!')</script>");
                dlBind();            }
        }
    }这样e 打点才出来..不过ID...还是删除不了...

Answer 20

protected void Repeater1_ItemCommand(object sender, RepeaterItemEventArgs e)
    {
       if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
        if (e.CommandName == "Delete_but")
                {
                    int bb=int.Parse(e.CommandArgument.ToString());
                    string strcon = ConfigurationSettings.AppSettings["strcon"];
                    SqlConnection conn = new SqlConnection(strcon);
                    conn.Open();
                    SqlCommand com = new SqlCommand("delete from netbook where id=" + bb+ "", conn);
                    com.ExecuteNonQuery();
                    conn.Close();
                    Response.Write("<script>alert('删除成功!')</script>");
                    dlBind();
                }
            }    }
前台
<asp:Button ID="delete_but" CommandArgument='<%#DataBinder.Eval(Container.DataItem, "id")%>' CommandName="Delete_but" runat="server"></asp:Button>照着我的搞 成功了再给你解释

Answer 21

编译器错误信息: CS0117: “System.Web.UI.WebControls.RepeaterItemEventArgs”并不包含“CommandName”的定义源错误: 行 86:         if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
行 87:         {
行 88:             if (e.CommandName == "Delete_but")
行 89:             {
行 90:                 int bb = int.Parse(e.CommandArgument.ToString());
 

Answer 22

能台代码是: 
<asp:Button ID="delete_but" CommandArgument='<%#DataBinder.Eval(Container.DataItem, "id")%>' CommandName="Delete_but" runat="server"></asp:Button>

Answer 23

protected void Page_Load(object sender, EventArgs e)
        {
           if (!Page.IsPostBack){
            Dispaly();}
        }
        private void Dispaly()
        {
            Repeater1.DataSource= sql记录
            Repeater1.DataBind();
        }        protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                if (e.CommandName == "Delete")
                {
                    LinkButton delete = (LinkButton)e.Item.FindControl("delete");
                    delete.Attributes.Add("OnClick", "if(!confirm(\"确定删除么？\")) return false;");
                    int bb=int.Parse(e.CommandArgument.ToString()));
                     操作
Dispaly();
                }
            }
        }
前台
<asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand" OnItemDataBound="Repeater1_ItemDataBound">
        <HeaderTemplate>
        <table>
        </HeaderTemplate>
        
        <ItemTemplate>
        <tr>
        <td><%#DataBinder.Eval(Container.DataItem,"id") %></td>
        <td><%#DataBinder.Eval(Container.DataItem,"name") %></td>
        <td><%#DataBinder.Eval(Container.DataItem,"age") %></td>
        <td><%#DataBinder.Eval(Container.DataItem,"dtime") %></td>
        <td><%#DataBinder.Eval(Container.DataItem,"Url") %></td>
        <td><asp:LinkButton ID="delete" runat="server" Text="删除" CommandName="Delete" CommandArgument='<%#DataBinder.Eval(Container.DataItem,"id") %>'></asp:LinkButton></td>
        </tr>
        
        </ItemTemplate>
        
        <FooterTemplate>
        </table>
        </FooterTemplate>
        
        </asp:Repeater>

Answer 24

编译器错误信息: CS0117: “System.Web.UI.WebControls.RepeaterItemEventArgs”并不包含“CommandName”的定义源错误: 行 87:        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
行 88:             {
行 89:                 if (e.CommandName == "Delete")
行 90:                 {
行 91:                     LinkButton delete = (LinkButton)e.Item.FindControl("delete");
 源文件: f:\longbiao\net\book1\Default.aspx.cs    行: 89 一样的错误...555555