ASPX向ASCX傳值以及文本創(chuàng)建圖片(附源碼)
2024-07-10 12:46:09
供稿：網(wǎng)友
網(wǎng)頁(yè)ASPX有一個(gè)TextBox，另一個(gè)ASCX有一個(gè)ImageButton，用戶點(diǎn)一點(diǎn)這個(gè)銨鈕，把用戶在TextBox輸入的文字創(chuàng)建為一個(gè)圖片，ASCX的ImageButton的ImageUrl重新指向這剛產(chǎn)生的圖片。
為了傳值，寫(xiě)一個(gè)接口，返回aspx的TextBox函數(shù)：
代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for Itransmitable
/// </summary>
namespace Insus.NET
{
public interface Itransmitable
{
TextBox GetTextBoxControl();
}
}
A.aspx.cs，并實(shí)現(xiàn)接口。
代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using Insus.NET;
public partial class A : System.Web.UI.Page,Itransmitable
{
protected void Page_Load(object sender, EventArgs e)
{
}
public TextBox GetTextBoxControl()
{
return this.tbHid;
}
}
A.aspx，把用戶控件B.ascx接入頁(yè)面。
代碼如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="A.aspx.cs" Inherits="A" %>
<%@ Register src="B.ascx" tagname="B" tagprefix="uc1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="tbHid" runat="server" />
<uc1:B ID="B1" runat="server" />
</div>
</form>
</body>
</html>
B.ascx:
代碼如下:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="B.ascx.cs" Inherits="B" %>
<asp:ImageButton runat="server" ID="imgBmp" OnClick="imgBmp_Click" BorderWidth="1" />
B.ascx.cs:
代碼如下:
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Drawing.Text;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Insus.NET;
public partial class B : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
this.imgBmp.ImageUrl = GetImagePath("Insus.NET"); //默認(rèn)值。
}
protected void imgBmp_Click(object sender, ImageClickEventArgs e)
{
Itransmitable textbox = (Itransmitable)this.Page; //把page轉(zhuǎn)換為接口。
this.imgBmp.ImageUrl = GetImagePath(textbox.GetTextBoxControl().Text.Trim());
}
//創(chuàng)建圖片
private string GetImagePath(string _text)
{
Bitmap bitmap = new Bitmap(1, 1);
Font font = new Font("Arial", 25, FontStyle.Regular, GraphicsUnit.Pixel);
Graphics graphics = Graphics.FromImage(bitmap);
