javascript - GridView RowUpdating 在第二页中不起作用

Question

我使用以下代码在 OnUpdating 命令期间更新 gridview 中的值，

protected void grid_view_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    GridViewRow row = (GridViewRow)grid_view.Rows[e.RowIndex];
    int number = Convert.ToInt32(((TextBox)row.Cells[3].FindControl("flatnumber")).Text);
    string type = ((DropDownList)row.Cells[4].FindControl("flattype")).Text;
    int max = Convert.ToInt32(((DropDownList)row.Cells[5].FindControl("flatvacancy")).Text);
    string flatID = ((Label)row.Cells[0].FindControl("flatid")).Text;
    DataTable dt = (DataTable)ViewState["Table"];
    DataRow[] datarow = dt.Select("ID='" + flatID + "'");
    dt.Rows[e.RowIndex].BeginEdit();
    dt.Rows[e.RowIndex]["Number"] = number;
    dt.Rows[e.RowIndex]["Type"] = type;
    dt.Rows[e.RowIndex]["Vacancy"] = max;
    dt.Rows[e.RowIndex].EndEdit();
    dt.AcceptChanges();
    ViewState["Table"] = dt;
    grid_view.EditIndex = -1;
    grid_view.DataSource = dt;
    grid_view.DataBind();
}

这段代码在 GridView 的第一页中工作正常，但是当我尝试编辑第二页时它不起作用。当我单击编辑按钮时，正在加载相应的行编辑模板。当我单击“保存”而不是保存到第二页时，第一页行会被修改。例如，如果我单击第二页第二行中的编辑，然后单击更新后，第一页的第三行将使用新值进行修改，而不是第二页的第二行。

我的 RowEditing 和 CancelEditing 代码如下，

protected void grid_view_RowEditing(object sender, GridViewEditEventArgs e)
{
    grid_view.EditIndex = e.NewEditIndex;
    DataTable dt = (DataTable)ViewState["Table"];
    grid_view.DataSource = dt;
    grid_view.DataBind();
}

protected void grid_view_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
    grid_view.EditIndex = -1;
    DataTable dt = (DataTable)ViewState["Table"];
    grid_view.DataSource = dt;
    grid_view.DataBind();
}

Answer 1

您可以仅使用 e.RowIndex 访问更新的值，但要在数据表中进行更改，您必须添加 grid_view.PageIndex 和 grid_view 的乘积。 PageSize 更改为 e.RowIndex 以在实际行中进行更改。

protected void grid_view_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    GridViewRow row = (GridViewRow)grid_view.Rows[e.RowIndex];
    int number = Convert.ToInt32(((TextBox)row.Cells[3].FindControl("flatnumber")).Text);
    string type = ((DropDownList)row.Cells[4].FindControl("flattype")).Text;
    int max = Convert.ToInt32(((DropDownList)row.Cells[5].FindControl("flatvacancy")).Text);
    string flatID = ((Label)row.Cells[0].FindControl("flatid")).Text;
    DataTable dt = (DataTable)ViewState["Table"];
    int row1=e.RowIndex+(grid_view.PageIndex*grid_view.PageSize)
    dt.Rows[row1].BeginEdit();
    dt.Rows[row1]["Number"] = number;
    dt.Rows[row1]["Type"] = type;
    dt.Rows[row1]["Vacancy"] = max;
    dt.Rows[row1].EndEdit();
    dt.AcceptChanges();
    ViewState["Table"] = dt;
    grid_view.EditIndex = -1;
    grid_view.DataSource = dt;
    grid_view.DataBind();
}