Girdview在實際應用過程中，常常根據一定的條件，動態載入列。這個DEMO示範了如何載入列並進行資料繫結。
實際應用中，可據此進行變通。
HTML:
<%...@ Page Language="C#" AutoEventWireup="true" CodeFile="PostBack.aspx.cs" Inherits="PostBack" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns ="false">
<Columns >
<asp:TemplateField >
<ItemTemplate >
<asp:CheckBox ID="chk" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="btnGetField" runat="server" Text="GetField"
onclick="btnGetField_Click" /><br />
<asp:ListBox ID="list" runat="server" Height ="200px" Width="200px"></asp:ListBox>
</div>
</form>
</body>
</html>
CS:
public partial class PostBack : System.Web.UI.Page
...{
protected void Page_Load(object sender, EventArgs e)
...{
if (!IsPostBack)
...{
CreateView();
SetBind();
}
}
public void CreateView()
...{
BoundField dc1 = new BoundField();
dc1.DataField = "gwid";
dc1.HeaderText = "鋼網編號";
dc1.Visible = true;
BoundField dc2 = new BoundField();
dc2.Visible = true;
dc2.DataField = "machtype";
dc2.HeaderText = "機器型號";
BoundField dc3 = new BoundField ();
dc3.Visible = true;
dc3.DataField = "isok";
dc3.HeaderText ="目前狀態";
GridView1.Columns.Add(dc1);
GridView1.Columns.Add(dc2);
GridView1.Columns.Add(dc3);
}
public void SetBind()
...{
string connstr = ConfigurationManager.ConnectionStrings["ConnStr"].ToString();
using (SqlConnection conn = new SqlConnection(connstr))
...{
conn.Open();
string sql = "select top 10 * from allinfor";
SqlDataAdapter ada = new SqlDataAdapter(sql, conn);
DataSet ds = new DataSet();
ada.Fill(ds);
GridView1.DataSource = ds.Tables[0];
GridView1.DataBind();
}
}
protected void btnGetField_Click(object sender, EventArgs e)
...{
for(int i=0;i<GridView1.Rows.Count;i++)
...{
CheckBox chk = GridView1.Rows[i].FindControl("chk") as CheckBox;
if (chk.Checked == true)
...{
list.Items.Add(GridView1.Rows[i].Cells[2].Text);
}
}
}
}
