gridview rowdatabound 分页问题

[isabel_cui]

  protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindgrvTopic();
            }
        }

        protected void grvTopic_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            grvTopic.PageIndex = e.NewPageIndex;
            BindgrvTopic();
        }
        protected void BindgrvTopic()
        {
                this.grvTopic.DataKeyNames = new string[] { "TOPICID" }; 
               grvTopic.DataSource = profileservice.GetAll();
                grvTopic.DataBind();
            }
            catch (Exception exc)
            {
                Logger.Write(exc.Message.ToString(), "TopicView");
            }
        }
        protected void grvTopic_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            int topicId = 0;
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                if (e.Row.DataItemIndex > -1)
                {
                    topicId = Convert.ToInt32(grvTopic.DataKeys[e.Row.DataItemIndex].Value);                    ImageButton btn1 = e.Row.Cells[0].FindControl("btn1") as ImageButton;
                    Label lbl = e.Row.Cells[0].FindControl("lbl") as Label;
                    Image img1 = e.Row.Cells[0].FindControl("img1") as Image;
                    Image img2 = e.Row.Cells[0].FindControl("img2") as Image;
                    if (topicService.GetByTopicId(topicId).TopicLevel.ToString() == ConstService.MAINTOPICLEVEL)
                    {
                        if (topicService.GetSubTopic(topicService.GetByTopicId(topicId).TopicName).Count > 0)
                        {
                            btn1.Visible = true;
                        }
                        else
                        {
                            img2.Visible = true;
                        }
                    }
                    else
                    {
                        e.Row.Visible = false;
                        img1.Visible = true;
                    }
                }
            }
        }

分页之后，红色的那里就会报错，说argument out of range
求各位达人帮帮我~~

[阿非]

你设断点 看一下 grvTopic.DataKeys 的长度 与e.Row.DataItemIndex 分别是多少

报哪个错 是说e.Row.DataItemIndex 比grvTopic.DataKeys 的长度 大，下标越界

[niuniuhuang]

在RowDataBound我一般不用DataKeys，一般这样写
if (e.Row.RowType == DataControlRowType.DataRow)
{
DataRowView drv = e.Row.DataItem as DataRowView;
int topicId=Convert.ToInt32(drv["ID"]);
}

[itcrazyman]

[Quote=引用 4 楼 niuniuhuang 的回复:]
在RowDataBound我一般不用DataKeys，一般这样写
if (e.Row.RowType == DataControlRowType.DataRow)
{
DataRowView drv = e.Row.DataItem as DataRowView;
int topicId=Convert.ToInt32(drv["ID"]);
}
[/Quote]
mark up

[sohighthesky]

RowDataBound好像是在数据行绑定数据时触发，而此时DataKeys有可以还为空，
建议使用楼上说的方法

[sohighthesky]

RowDataBound好像是在数据行绑定数据时触发，而此时DataKeys有可以还为空，
建议使用楼上说的方法

[pdsnet]