Asp.Net Web控件 （七）（分页的DataList）

本来是不想写这篇的，不过由于之前的分页控件样式存在问题，现在更正了，所以还是找点内容发一下。

在封装还存在设计时出错的问题，和repeater一样的写法却设计时不支持，水平不够啊。

后来搞了个笨的方法在DesignMode下输出一段，真是有点，不过不会影响运行时。

<hxj:PageDataList ID="PageDataList1" runat="server" PageIndexBox="DropDownList" 
     RepeatColumns="4" PageSize="8" BackColor="White" BorderColor="#DEDFDE" 
     BorderStyle="None" BorderWidth="1px" CellPadding="4" ForeColor="Black" 
     GridLines="Vertical" PageAlign="right" Width="100%" EnableViewState="false">
     <FooterStyle BackColor="#CCCC99" />
     <ItemStyle BackColor="#F7F7DE" />
     <ItemTemplate>
          ProductID:
     <%

   1: # Eval("ProductID")

%>
<br />
ProductName:
<%

   1: # Eval("ProductName")

%>
</ItemTemplate>
<SelectedItemStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
<AlternatingItemStyle BackColor="White" />
</hxj:PageDataList>

 

设计时效果：

本来设计一直出错，技术不够只有多些了一段代码才不好看的解决，如下代码：

base.Render(writer);
if (!DesignMode)
    pagerHelper.Render(writer);
else
{
    if (!string.IsNullOrEmpty(PageCssClass))
    {
        writer.AddAttribute(HtmlTextWriterAttribute.Class, PageCssClass);
    }
    else
    {
        writer.AddAttribute(HtmlTextWriterAttribute.Class, "pagedefault");
    }
    if (!string.IsNullOrEmpty(PageStyle))
    {
        writer.AddAttribute(HtmlTextWriterAttribute.Style, PageStyle);
    }
    writer.AddStyleAttribute(HtmlTextWriterStyle.TextAlign, PageAlign.ToString());
    writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "div");
    writer.RenderBeginTag(HtmlTextWriterTag.Div);

    writer.Write(string.Concat("第", CurrentPageIndex.ToString(), "/", PageCount.ToString(), "页，每页", PageSize.ToString(), "条，共", RecordCount.ToString(), "条      "));

    writer.RenderBeginTag(HtmlTextWriterTag.Span);
    writer.Write("<<");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Span);
    writer.Write("<");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Span);
    writer.Write("1");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Span);
    writer.Write(">");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Span);
    writer.Write(">>");
    writer.RenderEndTag();

    if (PageIndexBox == PageIndexBoxType.TextBox)
    {
        writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_input");
        writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID + "_input");
        writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
        writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "30px");
        writer.AddAttribute(HtmlTextWriterAttribute.Value, CurrentPageIndex.ToString());
        writer.RenderBeginTag(HtmlTextWriterTag.Input);
        writer.RenderEndTag();

        writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_btn");
        writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID + "_btn");
        writer.AddAttribute(HtmlTextWriterAttribute.Type, "button");
        writer.AddAttribute(HtmlTextWriterAttribute.Value, "Go");
        writer.RenderBeginTag(HtmlTextWriterTag.Input);
        writer.RenderEndTag();
    }
    else if (PageIndexBox == PageIndexBoxType.DropDownList)
    {
        writer.Write(" 转到第");
        writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_input");
        writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID + "_input");
        writer.RenderBeginTag(HtmlTextWriterTag.Select);
        for (int i = 1; i <= PageCount; i++)
        {
            writer.AddAttribute(HtmlTextWriterAttribute.Value, i.ToString());
            if (i == CurrentPageIndex)
            {
                writer.AddAttribute(HtmlTextWriterAttribute.Selected, "true");
            }
            writer.RenderBeginTag(HtmlTextWriterTag.Option);
            writer.Write(i.ToString());
            writer.RenderEndTag();
        }
        writer.RenderEndTag();
        writer.Write("页");
    }

    writer.RenderEndTag();
}

导致下else下面这么长一段代码多出来，不过不影响运行时。

 

CS代码：

protected void Page_Load(object sender, EventArgs e)
{

}

protected void Page_PreRender(object sender, EventArgs e)
{
    PageDataList1.FromSection = DbSession.Default.From<Products>().OrderBy(Products._.ProductID.Asc);
    PageDataList1.DataBind();
}

 

运行时如下：

默认样式也修改了，之前的分页控件输出存在问题，导致样式不能发挥作用。

 

样式：PageCssClass=“badoo”

 

样式：PageCssClass=“scott”

 

各种样式css见 第五节 ,有20多种分页样式。

 

 

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