Question

我有一个gridview，它会在其中创建一个带有新gridview的新行创建第二个gridview的方法是：

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "PopExtendedGrid")
    {


    GridView _gridView = (GridView)sender;
int _rowIndex2 = int.Parse(e.CommandArgument.ToString());
GridView _ChildGrid = new GridView();
Control x = _gridView.Rows[_rowIndex2 + 1].Cells[1].Controls[1];
int Oid = int.Parse(((Label)x).Text);
_ChildGrid.DataSource = hs.GetExtendedGrid(Oid);
_ChildGrid.ID = "ChildGrid";
_ChildGrid.AutoGenerateColumns = false;
_ChildGrid.CssClass = "ChildGridS";
_ChildGrid.HeaderStyle.CssClass = "CreateHead";
BoundField one = new BoundField();
one.DataField = "ItemID";
one.HeaderText = "קוד מוצר";
_ChildGrid.Columns.Add(one);

BoundField two = new BoundField();
two.DataField = "ItemName";
two.HeaderText = "שם מוצר";
_ChildGrid.Columns.Add(two);

BoundField three = new BoundField();
three.DataField = "ItemSize";
three.HeaderText = "גודל מוצר";
_ChildGrid.Columns.Add(three);

GridViewRow tr = new GridViewRow(_rowIndex2 + 2 +10*this.GridView1.PageIndex,-1 , DataControlRowType.EmptyDataRow , DataControlRowState.Normal);
TableCell tc = new TableCell();
tc.ColumnSpan = _gridView.Columns.Count;
tc.Controls.Add(_ChildGrid);
tr.Cells.Add(tc);
if ((DataView)Session["dataSource"] != null)
 {
 DataView dv = (DataView)Session["dataSource"];
 this.GridView1.DataSource = dv;
 this.GridView1.DataBind();
 }
                else
                {
                    if (Session["lvl"].ToString() == "high")
                    {
                        PopulateGridViewAdmin();
                    }
                    else
                    {
                        PopulateGridViewUser();
                    }
                }
this.GridView1.Controls[0].Controls.AddAt(_rowIndex2 + 2, tr);
Session["ChildIndex"] = (_rowIndex2 + 2).ToString();
_ChildGrid.DataBind();
  }
}

我认为当我需要执行另一个命令或与gridview相关的东西时，我会删除这样的行：

this.GridView1.Controls[0].Controls.RemoveAt(int.Parse(Session["ChildIndex"].ToString()));

然后重新填充mastergridview但在我有机会这样做之前这个错误一直在弹出：

Failed to load viewstate.  The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request.  For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

我非常沮丧，我会非常感激地接受任何回答提前谢谢

Answer 1

您可能不需要跟踪该控件的ViewState，因为它是动态的，因此请尝试将EnableViewState设置为false，看看是否有帮助。

无法加载viewstate。正在加载viewstate的控制树必须与用于保存viewstate的控制树匹配

1 个答案: