System.ArgumentOutOfRangeException: 索引超出范围，求教
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异常详细信息: System.ArgumentOutOfRangeException: 索引超出范围。必须为非负值并小于集合大小。
参数名: index
源错误:
行 169: e.Row.Attributes["onmouseover"] = "ItemOver(this)";
行 170: string id = GridView1.DataKeys[e.Row.RowIndex].Value.ToString();
行 171: e.Row.Attributes.Add("onclick", "alert('" + id + "');"); //鼠标单击取行号
行 172: e.Row.Attributes.Add("style", "cursor:hand");
DataKeyNames设置了，不知道错在哪里了，问的问题太多了，没有分了，感谢大家，谢谢！！！
public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { fillGridView(); } } // 填充GridView protected void fillGridView() { DataSet ds = new DataSet(); ds = GetData(); GridView1.DataSource = ds; GridView1.DataKeyNames = new string[]{"id"}; GridView1.DataBind(); getRefSet(ds); } // 分页的相关参数设置 protected void getRefSet(DataSet ds) { lblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页"; lblPageCount.Text = "共 " + GridView1.PageCount.ToString() + " 页"; lblRecordCount.Text = "总共 " + ds.Tables[0].Rows.Count.ToString() + " 条"; if (ds.Tables[0].Rows.Count == 0) { lnkbtnFirst.Visible = false; lnkbtnPre.Visible = false; lnkbtnNext.Visible = false; lnkbtnLast.Visible = false; lblCurrentIndex.Visible = false; lblPageCount.Visible = false; lblRecordCount.Visible = false; } else if (GridView1.PageCount == 1) { lnkbtnFirst.Visible = false; lnkbtnPre.Visible = false; lnkbtnNext.Visible = false; lnkbtnLast.Visible = false; } // 设置LinkButton此时对应的参数 lnkbtnFirst.CommandArgument = "1"; lnkbtnPre.CommandArgument = (GridView1.PageIndex == 0 ? "1" : GridView1.PageIndex.ToString()); lnkbtnNext.CommandArgument = (GridView1.PageCount == 1 ? GridView1.PageCount.ToString() : (GridView1.PageIndex + 2).ToString()); lnkbtnLast.CommandArgument = GridView1.PageCount.ToString(); } // 跳转到指定页面，页面参数由txtJumpPage获取 protected void lnkbtnJumpPage_Click(object sender, EventArgs e) { GridView1.PageIndex = int.Parse(txtJumpPage.Text) - 1; lblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页"; fillGridView(); GridView1.DataBind(); } // 首页，上一页，下一页，尾页公用的点击程序 protected void PagerButtonClick(object sender, EventArgs e) { GridView1.PageIndex = Convert.ToInt32(((LinkButton)sender).CommandArgument) - 1; fillGridView(); GridView1.DataBind(); } // 转换SQL查询结果为DataSet private DataSet GetData() { OracleConnection conn = new OracleConnection("Data Source=wgyx;user=wgyx;password=wgyx;"); OracleCommand cmd = new OracleCommand(); cmd.Connection = conn; String strSql = "select id,fuid,the from sys_organ"; cmd.CommandText = strSql; cmd.CommandType = CommandType.Text; DataSet ds = new DataSet(); try { conn.Open(); OracleDataAdapter ad = new OracleDataAdapter(); ad.SelectCommand = cmd; ad.Fill(ds); } catch (Exception ex) { Response.Write("数据库错误，错误原因：" + ex.Message); Response.End(); } finally { conn.Close(); } return ds; } protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { e.Row.Attributes["onmouseover"] = "ItemOver(this)"; int count = GridView1.Rows.Count; for (int i = 0; i <= count; i++) { string id = GridView1.DataKeys[e.Row.RowIndex].Value.ToString(); e.Row.Attributes.Add("onclick", "alert('" + id + "');"); e.Row.Attributes.Add("style", "cursor:hand"); } } }