📄 default.aspx.cs
字号:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string BeginStr = TextBox1.Text.Trim().ToString();
int bint = Convert.ToInt32(TextBox2.Text.ToString());
int eint = Convert.ToInt32(TextBox3.Text.ToString());
if (bint < 0 || bint > BeginStr.Length)
{
Page.RegisterStartupScript("", "<script>alert('起始位置错误')</script>");
}
else
{
if (BeginStr.Length < bint || BeginStr.Length >eint)
{
string Endstr = BeginStr.Substring(bint, eint);
Label1.Text = "您截取后的结果:" + Endstr;
}
else
{
Page.RegisterStartupScript("", "<script>alert('截取的位数不要超过字符串个数')</script>");
}
}
}
}
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