【ASP.NET】控件应用总结（更新中）
文档目录
1.
DataGrid
2.
DropDownList
3.
GridView
4.
Repeater
5.
TreeView
6.
IFRAME
Datagrid
A.
删除提示：
第一种方法: 直接在页面加上javascript代码
第二种方法://缺点:整个单元格单击都会删除 private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e) { e.Item.Cells[3].Attributes.Add(" confirm('您真的要删除此行吗？');"); }
第三种方法: 删除
" HeaderText="
删除" CommandName="Delete"> 如果是是模版列中的button,则在form_load或其他事件里添加 Button1.Attributes.Add(" confirm('确定删除');");
DropDownList
A.
绑定
DropDownList1.DataSource =user.bindRoleName();
DropDownList1.DataTextField = "RoleName";
DropDownList1.DataValueField = "RoleName";
DropDownList1.DataBind();
DropDownList1.Items.Insert(0, new ListItem( "-
请选择-","0"));
GridView
A.
RowDataBound
事件
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
{
((HyperLink)e.Row.Cells[3].Controls[0]).Attributes.Add(" "javascript:window.open('RolePermission.aspx?ID=" + DataBinder.Eval(e.Row.DataItem, "UserID").ToString() + "&Name=" + DataBinder.Eval(e.Row.DataItem, "UserName").ToString() + "&up=role', 'Install', 'left=700,top=180,height=60,width=80'); ");
((LinkButton)e.Row.Cells[5].Controls[0]).Attributes.Add(" "javascript:return confirm('
你确认要删除：\"" + e.Row.Cells[1].Text + "\"吗?')");
}
}
}
B.
GridView
索引超出范围。必须为非负值并小于集合大小。参数名: index解决方案
指定： DataKeysNames="stid"
C.
<PagerStyle CssClass="cssPager" />
页码样式
(1)<
style
type="text/css">
.cssPager span { font-weight:bold; color:Red; padding-left:3px; padding-right:3px;}
</style>
(2)<
style
type="text/css">
.page
span{
background
:#FFFFFF none repeat scroll 0 0;
border
:1px solid #B2BFCF;
display
:block;
float
:left;
height
:18px;
line-height
:18px;
margin-right
:4px;
padding
:0 5px;
}
</
style
>
D
．没数据显示表头
public void NoRecordBuild(GridView gridView, DataSet ds)
{
if (ds.Tables[0].Rows.Count == 0)
{
ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
gridView.DataSource = ds;
gridView.DataBind();
int columnCount = gridView.Rows[0].Cells.Count;
gridView.Rows[0].Cells.Clear();
gridView.Rows[0].Cells.Add(new TableCell());
gridView.Rows[0].Cells[0].ColumnSpan = columnCount;
gridView.Rows[0].Cells[0].Text = "No Records Found.";
}
else
{
gridView.DataSource = ds;
gridView.DataBind();
}
}
Repeater
A.
ItemDataBound
用法
protected void Repeater4_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
LinkButton lkb = (LinkButton)e.Item.FindControl("LinkButton4");
lkb.Attributes.Add(" "return confirm('
确认要删除吗');");
DataRowView gv = (DataRowView)e.Item.DataItem;
Literal Literal2 = (Literal)e.Item.FindControl("Literal2");
Literal2.Text = gv["Area"].ToString();
}
B. 笔记：asp:repeater 两列显示
<table>
<asp:repeater id="myRepeater" runat="server">
<ItemTemplate>
<tr>
<td>
第一列
</td>
</ItemTemplate>
<AlternatingItemTemplate>
<td>
第二列
</td>
</tr>
</AlternatingItemTemplate>
</asp:repeater>
</table>
<asp:repeater id="myRepeater" runat="server">
<ItemTemplate>
<tr>
<td>
第一列
</td>
</ItemTemplate>
<AlternatingItemTemplate>
<td>
第二列
</td>
</tr>
</AlternatingItemTemplate>
</asp:repeater>
</table>
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (i % 2 == 0)
{
e.Item.Controls.Add(new LiteralControl("</tr><tr>"));
}
i++;// 每一条记录绑定的时候就会加1
}
{
if (i % 2 == 0)
{
e.Item.Controls.Add(new LiteralControl("</tr><tr>"));
}
i++;// 每一条记录绑定的时候就会加1
}
TreeView
A.
树型加载
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindTree(TreeView1.Nodes, "0");
}
foreach (TreeNode tn in TreeView1.Nodes)
{
readNotes(tn);
}
}
B.绑定
private void BindTree(TreeNodeCollection nds, string parentId)
{
TreeNode tn = null;
DataTable dt = GetTreeTable();
foreach (DataRow dr in dt.Select("[ParentID]='" + parentId + "'"))
{
tn = new TreeNode(dr["ChnName"].ToString(), dr["ChnID"].ToString());
//tn.ShowCheckBox = true;
tn.Target = "mainFrame";
tn.NavigateUrl = "../DocBk/docBkMainRight.aspx?LeafID=" + dr["ChnID"].ToString();
nds.Add(tn);
BindTree(tn.ChildNodes, dr["ChnID"].ToString());
tn.SelectAction = TreeNodeSelectAction.Expand;
tn.CollapseAll();
//
扩展DTS
if (parentId == "0")
{
tn.Expand();
}
}
}
public DataTable GetTreeTable()
{
DataTable dt = new DataTable();
dt = Component.SystemUtility.GetCatalogs();
HttpContext.Current.Cache.Insert("Treeview", dt);
return dt;
}
C.读取
private void readNotes(TreeNode tn)
{
foreach (TreeNode tnChild in tn.ChildNodes)
{
readNotes(tnChild);
}
}
D.扩展TreeView
private void parentExpand(TreeNode tnChild)
{
if (tnChild.Parent.Depth != 0)
{
tnChild.Parent.Expand();
parentExpand(tnChild.Parent);
}
}
//get TreeView Nodes
StringBuilder sb = new StringBuilder();
foreach (TreeNode tn in SmartTreeView1.CheckedNodes)
{
sb.Append(tn.Value + ",");
}
<Ifram />应用
A
．Src赋值方法：
this
.frameR.Attributes.Add("src", "CatalogAddFrame.aspx?n=" + pID);