如何更改GridView页面索引

Question

如何根据下拉列表选择的索引更改Gridview页面？下拉列表不在gridview中，任何帮助将不胜感激。

Answer 1

你需要做的是GridView的PageSize属性设置为你的DropDownList的所选项目价值的价值是什么：

private void DropDownListPageSize_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    gridview.PageSize = DropDownListPageSize.SelectedValue; 
} 

Answer 2

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" 
      onselectedindexchanged="DropDownList1_SelectedIndexChanged">  
    </asp:DropDownList> 

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    GridView1.PageIndex = DropDownList1.SelectedItem.Value; 
    GridView1.DataSource = datatable; 
    GridView1.DataBind(); 
}