循环添加列的问题,datatable还是gridview随意来 我想要的效果:界面加载时,只有3列,就是图片上的前三列。然后点“添加更多”,下面就会出来第四列,再点,第五列最后点提交,可以把上面的每一列都insert到数据库里。谢谢 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 貌似这个功能可以通过gridview实现,不过不能不刷新,要不刷新只能用ajxa.动态读取DataSet. 用panel隐藏显示下面的然后点连接显示或者隐藏文本框就用textbox1-textbox5然后循环判断控件里的值是否为空如果一个为空就不判断下面的文本框直接return 这个方法我倒没有想过。。好像比datatable和Gridview简单很多。。那insert的时候for循环怎么写? for (int i = 1; i < 6; i++) { TextBox txt1 = (TextBox)this.FindControl("TextBox" + i.ToString()); if (txt1.Text != "") { Response.Write(txt1.Text); } } <%@ Page Language="C#" %><%@ Import Namespace="System.Data" %><%@ Import Namespace="System.Data.Sql" %><%@ Import Namespace="System.Data.SqlClient" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { using (DataTable dt = new DataTable()) { dt.Columns.Add("money"); dt.Columns.Add("date"); dt.Rows.Add(dt.NewRow()); dt.Rows.Add(dt.NewRow()); Session["dt"] = dt; this.GridView1.DataSource = dt; this.GridView1.DataBind(); } } } protected void LinkButton1_Click(object sender, EventArgs e) { using (DataTable dt = (DataTable)Session["dt"]) { dt.Rows.Add(dt.NewRow()); Session["dt"] = dt; this.GridView1.DataSource = dt; this.GridView1.DataBind(); } } protected void Button1_Click(object sender, EventArgs e) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM table_name WHERE 1=2", conn)) { using (SqlCommandBuilder cb = new SqlCommandBuilder(da)) { using (DataTable dt = (DataTable)Session["dt"]) { for (int i = 0; i < dt.Rows.Count; i++) { dt.Rows[i][0] = ((TextBox)this.GridView1.Rows[i].FindControl("TextBox1")).Text; dt.Rows[i][1] = ((TextBox)this.GridView1.Rows[i].FindControl("TextBox2")).Text; } da.Update(dt); dt.AcceptChanges(); Session["dt"] = dt; this.GridView1.DataSource = dt; this.GridView1.DataBind(); } } } conn.Close(); } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title></title></head><body> <form id="form1" runat="server"> <div> <asp:Label ID="lblTheme" runat="server" Text="订单对应主题:"></asp:Label> <asp:Label ID="lblCode" runat="server" Text="订单号:"></asp:Label><br /> <asp:Label ID="lblSum" runat="server" Text="总金额:"></asp:Label> <asp:LinkButton ID="LinkButton1" runat="server" Text="添加更多" OnClick="LinkButton1_Click"></asp:LinkButton> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" ShowHeader="false"> <Columns> <asp:TemplateField> <ItemTemplate> <asp:Label ID="Label1" runat="server">第<%#Container.DataItemIndex + 1%>次回款金额:</asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <asp:TextBox ID="TextBox1" runat="server" Text="<%#Bind('money')%>"></asp:TextBox> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <asp:Label ID="Label2" runat="server">回款时间:</asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <asp:TextBox ID="TextBox2" runat="server" Text="<%#Bind('date')%>"></asp:TextBox> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> <asp:Button ID="Button1" runat="server" Text="提交" OnClick="Button1_Click" /> </div> </form></body></html> 我是DataAdapter的fans,用一个CommandBuilder真的很省事的,一下子就把数据全部写入数据库里,呵呵~ 商品销售了多少件的统计 关于Application的用法 xp系统iis5.1安装后无法打开Default.htm文件 怎么用代码在表格末尾增加一行 请讲一下asp.net需要多深的c#基础.再说一下可以同时学习java和ASP.NET吗? 终于完成了数据库设计理论和应用的系列文章,欢迎讨论 请问这个怎么做? 关于下载问题,最后一个就可以完成了.出现在这样的问题,急~~ .net没有xmlhttp组件? 使用盗版.net应用于网站,微软会管吗? 无法将类型为“System.DBNull”的对象强制转换为类型“System.String” 表格插入的图片,图片间有空白怎么解决?
然后点连接显示或者隐藏
文本框就用textbox1-textbox5
然后循环判断控件里的值是否为空
如果一个为空就不判断下面的文本框
直接return
这个方法我倒没有想过。。好像比datatable和Gridview简单很多。。那insert的时候for循环怎么写?
for (int i = 1; i < 6; i++)
{
TextBox txt1 = (TextBox)this.FindControl("TextBox" + i.ToString());
if (txt1.Text != "")
{
Response.Write(txt1.Text);
}
}
<%@ Import Namespace="System.Data.Sql" %>
<%@ Import Namespace="System.Data.SqlClient" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
using (DataTable dt = new DataTable())
{
dt.Columns.Add("money");
dt.Columns.Add("date");
dt.Rows.Add(dt.NewRow());
dt.Rows.Add(dt.NewRow());
Session["dt"] = dt;
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
}
} protected void LinkButton1_Click(object sender, EventArgs e)
{
using (DataTable dt = (DataTable)Session["dt"])
{
dt.Rows.Add(dt.NewRow());
Session["dt"] = dt;
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
} protected void Button1_Click(object sender, EventArgs e)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
using (SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM table_name WHERE 1=2", conn))
{
using (SqlCommandBuilder cb = new SqlCommandBuilder(da))
{
using (DataTable dt = (DataTable)Session["dt"])
{
for (int i = 0; i < dt.Rows.Count; i++)
{
dt.Rows[i][0] = ((TextBox)this.GridView1.Rows[i].FindControl("TextBox1")).Text;
dt.Rows[i][1] = ((TextBox)this.GridView1.Rows[i].FindControl("TextBox2")).Text;
}
da.Update(dt);
dt.AcceptChanges();
Session["dt"] = dt;
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
}
}
conn.Close();
}
}
</script><html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="lblTheme" runat="server" Text="订单对应主题:"></asp:Label>
<asp:Label ID="lblCode" runat="server" Text="订单号:"></asp:Label><br />
<asp:Label ID="lblSum" runat="server" Text="总金额:"></asp:Label>
<asp:LinkButton ID="LinkButton1" runat="server" Text="添加更多" OnClick="LinkButton1_Click"></asp:LinkButton>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" ShowHeader="false">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="Label1" runat="server">第<%#Container.DataItemIndex + 1%>次回款金额:</asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text="<%#Bind('money')%>"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="Label2" runat="server">回款时间:</asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text="<%#Bind('date')%>"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="Button1" runat="server" Text="提交" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>