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net 网站开发知识点一
介绍了Form验证，FCKediter控件的使用，以及分页控件的使用，这章将再介绍几点简单的知识点，掌握这些知识，就可以简单一个简单的新闻发布网站。
一、新闻标题
这样的新闻预览标题可以用reapeter控件实现
[html]
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate >
<table width="550" border="1" cellpadding="0" style=" border:none">
<tr>
<td height="30px" style="border-left-width:0; border-top-width:0; border-right-width:0; border-bottom-width:0 " class="text"><%# Convert.ToDateTime(Eval("NewsTime")).ToShortDateString() %> </td>
</tr>
<tr>
<td style="border-left-width:0; border-top-width:0; border-right-width:0; border-bottom-width:0 " >
<p style=" text-align:justify ; font-size: 12pt; color: #306; font-family: Arial, Helvetica, sans-serif;font-style: italic; font-weight: bold; width:550px;overflow:hidden"> <%# Eval("NewsTitle") %> </td>
</tr>
<tr>
<td style="border-left-width:0; border-top-width:0; border-right-width:0; border-bottom-width:0 ; padding-top:10px" class="text">
<p style=" text-align:justify ; width:550px; overflow:hidden "> <%# getchar(Eval("NewsText").ToString(),340)%> </td>
</tr>
<tr>
<td height="30px" style="border-left-width:0; border-top-width:0; border-right-width:0; border-bottom-color:#666;" ><br /><a href="NewsView.aspx?id=<%# Eval("id")%>" class="more">More</a></td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
后台代码如下：
[csharp]
namespace WebAPP
{
public partial class NewsReleases : System.Web.UI.Page
{
private NewsManage newsManage = new NewsManage();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Repeater1.DataSource = newsManage.GetList();
Repeater1.DataBind();
}
}
public string getchar(string str, int len)
{
str = Regex.Replace(str, @"<[^>]+>", "");
if (str.Length > len)
str = str.Substring(0, len);
str += "…";
return str;
}
}
}
还有一种标题类型：
这种可以用datalist绑定，也可以用repeater绑定:
[html]
<p class="productList">
<asp:Repeater ID="Repeater1" runat="server">
<HeaderTemplate>
<ul>
</HeaderTemplate>
<ItemTemplate>
<li>
<table border="0">
<tr><td valign="middle" ><img src="<%# Eval("imagePath") %>" width="65px" height="75px" style=" margin-right:5px;border: 1px solid black;" /></td>
<td valign="top" height="85px" width="125px" style="font-size:12px; word-spacing:3px; text-align:left"><a href="Media<%# Eval("fileType") %>.aspx?id=<%# Eval("id")%>" target="_blank" class="bottom" > <%# Eval("fileTitle") %></a>
<p style=" width:125px"><%# Eval("fileMonth") %> <%# Eval("fileYear") %></p>
</td></tr>
</table>
</li>
</ItemTemplate>
<FooterTemplate>
</ul>
</FooterTemplate>
</asp:Repeater>
</p>
Reperter需要设置一定的CSS样式：
[html]
.productList{
border:none;
margin:0px;
width:630px;
}
.productList ul{
margin:0px;
padding:0px;
list-style:none;
}
.productList li{
float:left;
padding-right:10px;
width:200px;
list-style:none;
}
二、后台编辑模块
分页控件在上一章讲过，Gridview绑定数据也很简单，这里要讲一下操作这个模板项
代码如下：
[html]
<asp:TemplateField HeaderText="操作">
<ItemTemplate>
<asp:Button ID="btnView" runat="server" Text="查看详情" ForeColor="#0063DC" CommandName="View" CommandArgument="<%# Container.DisplayIndex %>" />
<asp:Button ID="btnCancel" runat="server" Text="删除" ForeColor="#0063DC" CommandName="Cancel" CommandArgument="<%# Container.DisplayIndex %>" />
</ItemTemplate>
<ItemStyle Width="130px" ForeColor="#0063DC" />
</asp:TemplateField>
<Container.DisplayIndex>可以确定行号
后台代码：
[csharp]
namespace WebAPP
{
public partial class EditNews : System.Web.UI.Page
{
private NewsManage newsManage = new NewsManage();
/// <summary>
/// GridView绑定全部数据
/// </summary>
public void GridViewBind()
{
txtRowCount.Text = newsManage.ExecuteScalar().ToString();
AspNetPager.RecordCount = newsManage.ExecuteScalar();
int intStart = AspNetPager.PageSize * (AspNetPager.CurrentPageIndex - 1);
int intNum = AspNetPager.PageSize;
DataGridView.DataSource = newsManage.GetList(intStart, intNum);
DataGridView.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
if (!IsPostBack)
{
GridViewBind();
}
}
catch (Exception ex)
{ throw ex; }
}
protected void DataGridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
int rowIndex = Convert.ToInt32(e.CommandArgument);
int id = Convert.ToInt32(DataGridView.Rows[rowIndex].Cells[0].Text);
if (e.CommandName == "Cancel")
{
try
{
newsManage.Delete(id);
}
catch (Exception ex)
{ throw (ex); }
}
if (e.CommandName == "View")
{
Response.Redirect("NewsDetail.aspx?id=" + id);
}
}
protected void DataGridView_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
try
{
DataGridView.EditIndex = -1;
GridViewBind();
}
catch (Exception ex)
{ throw ex; }
}
protected void DataGridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
((Button)e.Row.Cells[2].Controls[3]).Attributes.Add("onclick", "javascript:return confirm('你确定要删除此项么？')");
}
}
protected void DropListNumber_TextChanged(object sender, EventArgs e)
{
try
{
//选择数据显示行数
AspNetPager.PageSize = Convert.ToInt32(DropListNumber.SelectedValue);
GridViewBind();
}
catch (Exception ex)
{ throw ex; }
}
protected void AspNetPager_PageChanged(object sender, EventArgs e)
{
try
{
GridViewBind();
}
catch (Exception ex)
{ throw ex; }
}
}
}
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