我正在使用 Viewstate Concept 向网格添加新行。但我无法删除最后一行。默认情况下,我将一个空行绑定到网格。
// 添加新行
if (ViewState["CurrentTable"] != null)
{
DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
DataRow drCurrentRow = null;
int i;
if (dtCurrentTable.Rows.Count > 0)
{
for (i = 1; i <= dtCurrentTable.Rows.Count; i++)
{
TextBox txtguide = (TextBox)grdreports.Rows[rowIndex].FindControl("txtAccNo");
dtCurrentTable.Rows[i - 1]["txtAccNo"] = txtguide.Text;
}
drCurrentRow = dtCurrentTable.NewRow();
dtCurrentTable.Rows.Add(drCurrentRow);
ViewState["CurrentTable"] = dtCurrentTable;
ViewState["rowcount"] = dtCurrentTable.Rows.Count;
grdreports.DataSource = dtCurrentTable;
grdreports.DataBind();
}
// 删除最后一行
if (Grid.Rows.Count > 1)
{
if (ViewState["CurrentTable"] != null)
{
DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
dtCurrentTable.Rows.RemoveAt(dtCurrentTable.Rows.Count);
ViewState["CurrentTable"] = dtCurrentTable;
Grid.DataSource = dtCurrentTable;
Grid.DataBind();
}
else
{
Response.Write("ViewState is null");
}
}
我哪里错了?