请问在GridView里在RowCommand()写事件，下一页为什么会报错？？？

[liufenfen]

用GridView显示数据，里面有删除，在模板里放的ImageButton删除，在RowCommand()里触发事件，为什么当点击下一页的时候，事件也会被激发，我在gvRoomType_PageIndexChanging（）事件里也设置了GridView的页索引等于当前页，怎么解决这一问题，直接激发删除事件？？？

[huming_h]

在rowCommand（）里面执行删除事件
如：
你在imagebutton中设置CommandName="remove"属性的值和CommandArgument='<%# Eval("ID") %>'参数的值，然后就可以根据CommandName来判断是否是删除事件
比如
if(e.CommandName=="remove")
{
int id=Convert.toInt32(e.CommandArgument);
}

[liufenfen]

可下一页就没反应了，这个又怎么回事咧？？？

[PandaIT]

<asp:ImageButton commandName="del"

if(e.CommandName=="del")
{
//这里写事件！！
}

[PandaIT]

下一页没反应了?

[liufenfen]

就是当我点击下一页的时侯GridView不会翻页啊，在gvRoomType_PageIndexChanging（）事件里我也设置了下一页代码啊？

[PandaIT]

PageIndexChanging //分页之前的事件

 <asp:GridView ID="GridView1" ShowFooter="false" BorderColor="Black" OnRowDataBound="GridView1_RowDataBound"  runat="server" AutoGenerateColumns="False"  Font-Size="12px" Width="549px"  AllowPaging="True" >
          <Columns>
            <asp:BoundField DataField="ID" HeaderText="编号" />
            <asp:BoundField DataField="EmpID" HeaderText="账号" />
            <asp:BoundField DataField="EmpRealName" HeaderText="姓名" />
            <asp:BoundField DataField="EmpSex" HeaderText="性别" />
            <asp:BoundField DataField="EmpAddress" HeaderText="住址" />
            <asp:BoundField DataField="EmpZipCode" HeaderText="邮编" />
            <asp:BoundField DataField="EmpBirthday" HeaderText="生日" DataFormatString="{0:yyyy-MM-dd}" HtmlEncode="False" />
            <asp:BoundField DataField="EmpSalary" HeaderText="薪水" DataFormatString="{0:c}" HtmlEncode="False" />
          </Columns>
          <HeaderStyle BackColor="Azure" Font-Size="12px" HorizontalAlign="Center" />
          <RowStyle HorizontalAlign="Center" />
          <PagerStyle HorizontalAlign="Center" BackColor="#FFFFCC" BorderStyle="None" BorderWidth="0px" ForeColor="#330099" />
            <PagerSettings Visible="False" />
        </asp:GridView>
        <br />
        <asp:LinkButton ID="lnkbtnFrist" runat="server" OnClick="lnkbtnFrist_Click">首页</asp:LinkButton> 
        <asp:LinkButton ID="lnkbtnPre" runat="server" OnClick="lnkbtnPre_Click">上一页</asp:LinkButton> 
        <asp:Label ID="lblCurrentPage" runat="server"></asp:Label> 
        <asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="lnkbtnNext_Click">下一页</asp:LinkButton> 
        <asp:LinkButton ID="lnkbtnLast" runat="server" OnClick="lnkbtnLast_Click">尾页</asp:LinkButton> 
跳转到第<asp:DropDownList ID="ddlCurrentPage" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> 
        </asp:DropDownList>页

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bind();
        }
    }
    /// <summary>
    /// 绑定数据
    /// </summary>
    public void bind()
    {
        string sqlStr = "select * from Employee";
        DataSet myds = Common.dataSet(sqlStr);
        GridView1.DataSource = myds;
        GridView1.DataKeyNames = new string[] { "ID" };
        GridView1.DataBind();
        this.ddlCurrentPage.Items.Clear();
        for (int i = 1; i <= this.GridView1.PageCount; i++)
        {
            this.ddlCurrentPage.Items.Add(i.ToString());
        }
        this.ddlCurrentPage.SelectedIndex = this.GridView1.PageIndex;
    }
    /// <summary>
    /// 在 GridView 控件中的某个行被绑定到一个数据记录时发生。此事件通常用于在某个行被绑定到数据时修改该行的内容。
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        this.lblCurrentPage.Text = string.Format("当前第{0}页/总共{1}页", this.GridView1.PageIndex + 1, this.GridView1.PageCount); 

        //遍历所有行设置边框样式
        foreach (TableCell tc in e.Row.Cells)
        {
            tc.Attributes["style"] = "border-color:Black";
        }
        //用索引来取得编号
        if (e.Row.RowIndex != -1)
        {
            int id = GridView1.PageIndex * GridView1.PageSize + e.Row.RowIndex + 1;
            e.Row.Cells[0].Text = id.ToString();
        }
        
    }
    /// <summary>
    /// 重新绑定
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        this.GridView1.PageIndex = this.ddlCurrentPage.SelectedIndex;
        bind();
    }
    protected void lnkbtnFrist_Click(object sender, EventArgs e)
    {
        this.GridView1.PageIndex = 0;
        bind();
    }
    protected void lnkbtnPre_Click(object sender, EventArgs e)
    {
        if (this.GridView1.PageIndex > 0)
        {
            this.GridView1.PageIndex = this.GridView1.PageIndex - 1;
            bind();
        }
    }
    protected void lnkbtnNext_Click(object sender, EventArgs e)
    {
        if (this.GridView1.PageIndex < this.GridView1.PageCount)
        {
            this.GridView1.PageIndex = this.GridView1.PageIndex + 1;
            bind();
        }
    }
    protected void lnkbtnLast_Click(object sender, EventArgs e)
    {
        this.GridView1.PageIndex = this.GridView1.PageCount;
        bind();
    } 

[wuyq11]

protected void gv_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
int id=int.Parse(gv.DataKeys[e.RowIndex].Value.ToString());
}
catch
{

}
BindData();
}
自定义分页
if(!IsPostBack)
{BindData();
}

[wuyq11]

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
this.GridView1.PageIndex = e.NewPageIndex;
BindData();
}
或使用分页控件aspnetpager

[cuike519]

应该有个参数好像叫CommandName吧。。。

[teerhu]

[Quote=引用 6 楼 zhoukang0916 的回复:]
PageIndexChanging //分页之前的事件

C# code<asp:GridView ID="GridView1" ShowFooter="false" BorderColor="Black" OnRowDataBound="GridView1_RowDataBound" runat="server" AutoGenerateColumns="False" Font-Size="12px" Width="549px" AllowPaging="True"><Columns><asp:BoundField DataField="ID" HeaderText="编号"/><asp:BoundField DataField="EmpID" HeaderText="账号"/><asp:BoundField DataField="EmpRealName" HeaderText="姓名"/><asp:BoundField DataField="EmpSex" HeaderText="性别"/><asp:BoundField DataField="EmpAddress" HeaderText="住址"/><asp:BoundField DataField="EmpZipCode" HeaderText="邮编"/><asp:BoundField DataField="EmpBirthday" HeaderText="生日" DataFormatString="{0:yyyy-MM-dd}" HtmlEncode="False"/><asp:BoundField DataField="EmpSalary" HeaderText="薪水" DataFormatString="{0:c}" HtmlEncode="False"/></Columns><HeaderStyle BackColor="Azure" Font-Size="12px" HorizontalAlign="Center"/><RowStyle HorizontalAlign="Center"/><PagerStyle HorizontalAlign="Center" BackColor="#FFFFCC" BorderStyle="None" BorderWidth="0px" ForeColor="#330099"/><PagerSettings Visible="False"/></asp:GridView><br/><asp:LinkButton ID="lnkbtnFrist" runat="server" OnClick="lnkbtnFrist_Click">首页</asp:LinkButton><asp:LinkButton ID="lnkbtnPre" runat="server" OnClick="lnkbtnPre_Click">上一页</asp:LinkButton><asp:Label ID="lblCurrentPage" runat="server"></asp:Label><asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="lnkbtnNext_Click">下一页</asp:LinkButton><asp:LinkButton ID="lnkbtnLast" runat="server" OnClick="lnkbtnLast_Click">尾页</asp:LinkButton>
跳转到第<asp:DropDownList ID="ddlCurrentPage" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"></asp:DropDownList>页


C# codeprotectedvoid Page_Load(object sender, EventArgs e)
{if (!IsPostBack)
{
bind();
}
}///<summary>/// 绑定数据///</summary>publicvoid bind()
{string sqlStr="select * from Employee";
DataSet myds= Common.dataSet(sqlStr);
GridView1.DataSource= myds;
GridView1.DataKeyNames=newstring[] {"ID" };
GridView1.DataBind();this.ddlCurrentPage.Items.Clear();for (int i=1; i<=this.GridView1.PageCount; i++)
{this.ddlCurrentPage.Items.Add(i.ToString());
}this.ddlCurrentPage.SelectedIndex=this.GridView1.PageIndex;
}///<summary>/// 在 GridView 控件中的某个行被绑定到一个数据记录时发生。此事件通常用于在某个行被绑定到数据时修改该行的内容。///</summary>///<param name="sender"></param>///<param name="e"></param>protectedvoid GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{this.lblCurrentPage.Text=string.Format("当前第{0}页/总共{1}页",this.GridView1.PageIndex+1,this.GridView1.PageCount);//遍历所有行设置边框样式foreach (TableCell tcin e.Row.Cells)
{
tc.Attributes["style"]="border-color:Black";
}//用索引来取得编号if (e.Row.RowIndex!=-1)
{int id= GridView1.PageIndex* GridView1.PageSize+ e.Row.RowIndex+1;
e.Row.Cells[0].Text= id.ToString();
}

}///<summary>/// 重新绑定///</summary>///<param name="sender"></param>///<param name="e"></param>protectedvoid DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{this.GridView1.PageIndex=this.ddlCurrentPage.SelectedIndex;
bind();
}protectedvoid lnkbtnFrist_Click(object sender, EventArgs e)
{this.GridView1.PageIndex=0;
bind();
}protectedvoid lnkbtnPre_Click(object sender, EventArgs e)
{if (this.GridView1.PageIndex>0)
{this.GridView1.PageIndex=this.GridView1.PageIndex-1;
bind();
}
}protectedvoid lnkbtnNext_Click(object sender, EventArgs e)
{if (this.GridView1.PageIndex<this.GridView1.PageCount)
{this.GridView1.PageIndex=this.GridView1.PageIndex+1;
bind();
}
}protectedvoid lnkbtnLast_Click(object sender, EventArgs e)
{this.GridView1.PageIndex=this.GridView1.PageCount;
bind();
}



[/Quote]
up

[wg0332]

是不是load 事件里面 if(!IsPostBack){bind();}

[ccc0009]

if(!IsPostBack){
绑定
}

[Adechen]

有没有重新绑定