在位置 1 处没有任何行

if (txtName.Text == string.Empty)
{
gvPrice.DataSource = pricemanage.GetAllPrice("tb_price").Tables[0];
gvPrice.DataBind();
for (int i = 0; i < pricemanage.GetAllPrice("tb_price").Tables[0].Rows.Count; i++)
{
usermanage.UserID = pricemanage.GetAllPrice("tb_price").Tables[0].Rows[i][2].ToString();
newtaskmanage.TaskID = pricemanage.GetAllPrice("tb_price").Tables[0].Rows[i][4].ToString();
if (usermanage.UserID != null && newtaskmanage.TaskID != null)
{
gvPrice.Rows[i].Cells[1].Text = usermanage.FindUserByUserID(usermanage, "tb_user").Tables[0].Rows[i][1].ToString();
gvPrice.Rows[i].Cells[3].Text = newtaskmanage.FindByTaskID(newtaskmanage, "tb_newtask").Tables[0].Rows[i][1].ToString();
}
gvPrice.Rows[i].Cells[4].Text = Convert.ToDateTime(pricemanage.GetAllPrice("tb_price").Tables[0].Rows[i][6].ToString()).ToLongDateString();
}
}

调用的方法：
public DataSet FindUserByUserID(userManage usermanage, string tbName)
{
SqlParameter[] prams ={
data.MakeInParam("@userid",SqlDbType.Int,4,usermanage.UserID)
};
return (data.RunProcReturn("select * from tb_user where userid=@userid", prams, tbName));
}


public DataSet RunProcReturn(string procName, SqlParameter[] prams, string tbName)
{
SqlDataAdapter dap = CreateDataAdaper(procName, prams);
DataSet ds = new DataSet();
dap.Fill(ds, tbName);
this.Close();
//得到执行成功返回值
return ds;
}