ispostback问题

[chenghj87]

我原来是xp系统，vs2008+sql2005 做了一个博客系统在pageload用ispostback来绑定数据库，运行完全没问题
但是后来换了vista，也是vs2008+sql2005，但是运行之前的博客时，点击页面按钮式（例如删除评论等）似乎不会跳到ispostback里面的那个绑定的方法。

这是一个删除评论的代码，现在删除评论之后不会重新加载了，本来xp下面可以的。。
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class Admin_Default : System.Web.UI.Page
{
private string sConnectionString = ConfigurationManager.ConnectionStrings["blogConnString"].ToString();
protected void Page_Load(object sender, EventArgs e)
{

if (!IsCallback )
{
Bind();
}


}

private void Bind()
{
DataSet ds = new DataSet();
using (SqlConnection conn = new SqlConnection(sConnectionString))
{
SqlDataAdapter da = new SqlDataAdapter("select * from wenzhang;select * from comment", conn);
da.Fill(ds);
}
ds.Relations.Add("relationsbetweenwenzhangandcomment", ds.Tables[0].Columns["blog_id"], ds.Tables[1].Columns["commentblog_id"]);
Repeater3.DataSource = ds;
Repeater3.DataBind();
}

protected void Repeater4_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "delcomment")
{
using (SqlConnection conn = new SqlConnection(sConnectionString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand("delete from comment where comment_id=@commentid", conn))
{
cmd.Parameters.AddWithValue("@commentid", e.CommandArgument);
cmd.ExecuteNonQuery();

}
}
}
}
}

[shove]

if (!IsCallback )
{
Bind();
}



这里写错了


!IsPostBack

[dsr456]

有没有跟踪过，应该不会有这种问题吧

[chenghj87]

怎么跟踪啊？

[周公]

 { 
        
        if (!IsPostback )// 是!IsPostback 而不是!IsCallback 
        { 
            Bind(); 
        } 
        

    }

[douzexin1111]

为什么要用IsCallback 呢？？应该是IsPostBack吧？

[gyouyang]

汗啊

 if (!IsCallback ) 
        { 
            Bind(); 
        } 

 if (!IsPostBack) 
        { 
            Bind(); 
        }

你看看是那个吧....昏厥

[chenghj87]

我发错了，。。原来应该是ispostback的，但是也不行

[gyouyang]

删除后在调用一下绑定方法,这样看行不行
[code=C#
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class Admin_Default : System.Web.UI.Page
{
private string sConnectionString = ConfigurationManager.ConnectionStrings["blogConnString"].ToString();
protected void Page_Load(object sender, EventArgs e)
{

if (!IsCallback )
{
Bind();
}


}

private void Bind()
{
DataSet ds = new DataSet();
using (SqlConnection conn = new SqlConnection(sConnectionString))
{
SqlDataAdapter da = new SqlDataAdapter("select * from wenzhang;select * from comment", conn);
da.Fill(ds);
}
ds.Relations.Add("relationsbetweenwenzhangandcomment", ds.Tables[0].Columns["blog_id"], ds.Tables[1].Columns["commentblog_id"]);
Repeater3.DataSource = ds;
Repeater3.DataBind();
}

protected void Repeater4_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "delcomment")
{
using (SqlConnection conn = new SqlConnection(sConnectionString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand("delete from comment where comment_id=@commentid", conn))
{
cmd.Parameters.AddWithValue("@commentid", e.CommandArgument);
cmd.ExecuteNonQuery();

}
this.Bind();
}
}
}
}

][/code]

[llsen]

[Quote=引用 7 楼 chenghj87 的回复:]
我发错了，。。原来应该是ispostback的，但是也不行
[/Quote]

还怎么不行那

[shuijing116]

if (!IsPostback )

[wodexiaohao]

[Quote=引用 1 楼 shove 的回复:]
if (!IsCallback )
{
Bind();
}


这里写错了


!IsPostBack
[/Quote]

正解，楼主说的是Postback，这里疑似误写成了Callback
如果是误解，请你再详细的阐明一下这个问题，我们大家会乐于帮助的

[dengyun_1223]

关注

[net_xiaojian]

public partial class Admin_Default : System.Web.UI.Page 
{ 
    private bool mbRebind = false;
    private string sConnectionString = ConfigurationManager.ConnectionStrings["blogConnString"].ToString(); 
    protected void Page_PreRender(object sender, EventArgs e) 
    { 
        
        if (!IsCallback || mbRebind) 
        { 
            Bind(); 
        } 
        

    } 

    private void Bind() 
    { 
        DataSet ds = new DataSet(); 
        using (SqlConnection conn = new SqlConnection(sConnectionString)) 
        { 
            SqlDataAdapter da = new SqlDataAdapter("select * from wenzhang;select * from comment", conn); 
            da.Fill(ds); 
        } 
        ds.Relations.Add("relationsbetweenwenzhangandcomment", ds.Tables[0].Columns["blog_id"], ds.Tables[1].Columns["commentblog_id"]); 
        Repeater3.DataSource = ds; 
        Repeater3.DataBind(); 
    } 

    protected void Repeater4_ItemCommand(object source, RepeaterCommandEventArgs e) 
    { 
        if (e.CommandName == "delcomment") 
        { 
            using (SqlConnection conn = new SqlConnection(sConnectionString)) 
            { 
                conn.Open(); 
                using (SqlCommand cmd = new SqlCommand("delete from comment where comment_id=@commentid", conn)) 
                { 
                    cmd.Parameters.AddWithValue("@commentid", e.CommandArgument); 
                    cmd.ExecuteNonQuery(); 
                    mbRebind = true;
                } 
            } 
        } 
    } 
} 

这样准行，不行掐它...

[chenghj87]

13楼的方法和事件之后在运行下bind方法差不多啊，但是我就是搞不懂原来xp上可以，为什么到了vista上就不行了，是.net版本问题？
protected void Repeater4_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "delcomment")
{
using (SqlConnection conn = new SqlConnection(sConnectionString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand("delete from comment where comment_id=@commentid", conn))
{
cmd.Parameters.AddWithValue("@commentid", e.CommandArgument);
cmd.ExecuteNonQuery();
Bind（）;
}
}
}
}

[wodexiaohao]

打个断点，f11逐步调试看看，因为没数据库，大家没办法帮你做这一步

[net_xiaojian]

呵呵，你绑定的是Repeater3，怎么在Repeater4里面的ItemCommand，取名真牛。

[net_xiaojian]

根本就不是在一个repeater里面做一件事吧？！