c#循环赋值 为for循环建的一组textbox赋值,textbox2需要用到textbox1的值,请问该怎么赋啊? 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 不会啊~~~TextBox jihua = Controls["jihua" + (i - a-1).ToString()] as TextBox;jihuaAdd.Text = Convert.ToString(Convert.ToInt64(jihua.Text) + Convert.ToInt64(zaitu.Text) - Convert.ToInt64(mao.Text));一直是jihua=null。我C#只学过几天,老师就让做这个,真的不会啊~~~ TextBox jihua = Controls["jihua" + (i - a-1).ToString()] as TextBox;Controls["jihua" + (i - a-1).ToString()] 这个有值吗? 他的问题在这个帖子:http://topic.csdn.net/u/20110528/13/815c0189-5cc5-4ffe-af72-3b69d8f6af25.html 我写了点代码,可以完成你的要求,供参考,必须是在同一个窗体 // 创建两组TextBox private void button1_Click(object sender, EventArgs e) { int locX2 = 10; for (int i = 0; i < 3; i++) { ++i; locX2 += 50; TextBox zaitu = new TextBox(); this.SuspendLayout(); zaitu.Name = "zaitu" + i; zaitu.Text = i.ToString(); zaitu.Size = new Size(50, 12); zaitu.Location = new Point(locX2, 50); Controls.Add(zaitu); --i; } locX2 = 10; for (int i = 0; i < 3; i++) { ++i; locX2 += 50; TextBox zaituCopy = new TextBox(); this.SuspendLayout(); zaituCopy.Name = "zaituCopy" + i; zaituCopy.Text = "未设置"; zaituCopy.Size = new Size(50, 12); zaituCopy.Location = new Point(locX2, 100); Controls.Add(zaituCopy); --i; } } // 将第一组TextBox的值复制到第二组 private void button2_Click(object sender, EventArgs e) { for (int i = 0; i < 3; i++) { ++i; TextBox zaitu = Controls["zaitu" + i] as TextBox; TextBox zaituCopy = Controls["zaituCopy" + i] as TextBox; zaituCopy.Text = zaitu.Text; --i; } } for (i = a; i < 2*a; i++) { ++i; locX4 += this.jihuaAdd.Width + 10; TextBox jihuaAdd = new TextBox(); this.SuspendLayout(); jihuaAdd.Name = "jihua" + i; this.jihuaAdd.TabIndex = 3 * a; TextBox mao = Controls["mao" + (i - a).ToString()] as TextBox; TextBox zaitu = Controls["zaitu" + (i - a).ToString()] as TextBox; TextBox jihua = Controls["jihua" + (i - a-1).ToString()] as TextBox; if (i - a - 1 == 0) { jihuaAdd.Text = keyong.Text; } if (Convert.ToInt64(jihua.Text) + Convert.ToInt64(zaitu.Text) - Convert.ToInt64(mao.Text) >= Convert.ToInt64(this.anquan.Text)) { jihuaAdd.Text = Convert.ToString(Convert.ToInt64(jihua.Text) + Convert.ToInt64(zaitu.Text) - Convert.ToInt64(mao.Text)); } else if (Convert.ToInt64(zaitu.Text) + Convert.ToInt64(jihua.Text) - Convert.ToInt64(mao.Text) <= 0) { jihuaAdd.Text = Convert.ToString(Convert.ToInt64(zaitu.Text) + Convert.ToInt64(this.piliang.Text) + Convert.ToInt64(jihua.Text) - Convert.ToInt64(mao.Text)); } else { jihuaAdd.Text = Convert.ToString(Convert.ToInt64(zaitu.Text) + Convert.ToInt64(this.piliang.Text) + Convert.ToInt64(jihua.Text) - Convert.ToInt64(mao.Text)); } jihuaAdd.Size = new Size(50, 12); Convert.ToInt64(jihua.Text){"未将对象引用设置到对象的实例。"}i-a-1=0对不起,我真的挺笨的~~~ COM与TCP,TCP与COM通讯问题[急] 菜鸟求助,谁能帮我看看我写的串口通讯程序错误,没有返回的数据 如何实现dataGridview 只显示选中行 服务端调试问题 backgroundWorker使用问题 关于DDL 把pictureBox内的坐标系原点换到左下角如何实现 DropDownList数据绑定问题求救 请问在c#中如何排序(sort)? 内详,急! C#调用DLL的疑问。 C#人事管理系统怎么做 net remoting 中如何获取在服务里面获取服务端激活的远程对象
jihuaAdd.Text = Convert.ToString(Convert.ToInt64(jihua.Text) + Convert.ToInt64(zaitu.Text) - Convert.ToInt64(mao.Text));一直是jihua=null。我C#只学过几天,老师就让做这个,真的不会啊~~~
他的问题在这个帖子:
http://topic.csdn.net/u/20110528/13/815c0189-5cc5-4ffe-af72-3b69d8f6af25.html
private void button1_Click(object sender, EventArgs e)
{
int locX2 = 10;
for (int i = 0; i < 3; i++)
{
++i;
locX2 += 50;
TextBox zaitu = new TextBox();
this.SuspendLayout();
zaitu.Name = "zaitu" + i;
zaitu.Text = i.ToString();
zaitu.Size = new Size(50, 12);
zaitu.Location = new Point(locX2, 50);
Controls.Add(zaitu);
--i;
}
locX2 = 10;
for (int i = 0; i < 3; i++)
{
++i;
locX2 += 50;
TextBox zaituCopy = new TextBox();
this.SuspendLayout();
zaituCopy.Name = "zaituCopy" + i;
zaituCopy.Text = "未设置";
zaituCopy.Size = new Size(50, 12);
zaituCopy.Location = new Point(locX2, 100);
Controls.Add(zaituCopy);
--i;
}
}
// 将第一组TextBox的值复制到第二组
private void button2_Click(object sender, EventArgs e)
{
for (int i = 0; i < 3; i++)
{
++i;
TextBox zaitu = Controls["zaitu" + i] as TextBox;
TextBox zaituCopy = Controls["zaituCopy" + i] as TextBox;
zaituCopy.Text = zaitu.Text;
--i;
}
}
{
++i;
locX4 += this.jihuaAdd.Width + 10;
TextBox jihuaAdd = new TextBox();
this.SuspendLayout();
jihuaAdd.Name = "jihua" + i;
this.jihuaAdd.TabIndex = 3 * a;
TextBox mao = Controls["mao" + (i - a).ToString()] as TextBox;
TextBox zaitu = Controls["zaitu" + (i - a).ToString()] as TextBox;
TextBox jihua = Controls["jihua" + (i - a-1).ToString()] as TextBox;
if (i - a - 1 == 0) { jihuaAdd.Text = keyong.Text; }
if (Convert.ToInt64(jihua.Text) + Convert.ToInt64(zaitu.Text) - Convert.ToInt64(mao.Text) >= Convert.ToInt64(this.anquan.Text))
{
jihuaAdd.Text = Convert.ToString(Convert.ToInt64(jihua.Text) + Convert.ToInt64(zaitu.Text) - Convert.ToInt64(mao.Text));
}
else if (Convert.ToInt64(zaitu.Text) + Convert.ToInt64(jihua.Text) - Convert.ToInt64(mao.Text) <= 0)
{
jihuaAdd.Text = Convert.ToString(Convert.ToInt64(zaitu.Text) + Convert.ToInt64(this.piliang.Text) + Convert.ToInt64(jihua.Text) - Convert.ToInt64(mao.Text));
}
else
{
jihuaAdd.Text = Convert.ToString(Convert.ToInt64(zaitu.Text) + Convert.ToInt64(this.piliang.Text) + Convert.ToInt64(jihua.Text) - Convert.ToInt64(mao.Text));
}
jihuaAdd.Size = new Size(50, 12);
Convert.ToInt64(jihua.Text){"未将对象引用设置到对象的实例。"}
i-a-1=0
对不起,我真的挺笨的~~~