tushubianmaruku.cs

Vs2005C#图书管理系统初学的看看有好处的

        {
            if (!(((e.KeyChar >= '0') && (e.KeyChar <= '9')) || e.KeyChar <= 31))
            {
                if (e.KeyChar == '.')
                {
                    if (((TextBox)sender).Text.Trim().IndexOf('.') > -1)
                        e.Handled = true;
                }
                else
                    e.Handled = true;
            }
            else
            {
                if (e.KeyChar <= 31)
                {
                    e.Handled = false;
                }
                else if (((TextBox)sender).Text.Trim().IndexOf('.') > -1)
                {
                    if (((TextBox)sender).Text.Trim().Substring(((TextBox)sender).Text.Trim().IndexOf('.') + 1).Length >= 2)
                        e.Handled = true;
                }
            }

            if (e.KeyChar == 13)
            {

                if (textBjg.Text == "")
                {
                    MessageBox.Show("图书价格不能为空，请输入图书价格！！", "提示");
                    textBjg.Focus();
                }
                else
                {

                    textBjg.Enabled = false;
                   // textBkcsh.Enabled = true;
                    textBkcsh.Text = "0";
                    //textBkcsh.Focus();
                    textBgrsh.Enabled = true;
                    textBgrsh.Focus();
                }
            }
        }

        private void textBkcsh_KeyPress(object sender, KeyPressEventArgs e)
        {
           
            //if (e.KeyChar == 13)
            //{

            //    if (textBkcsh.Text == "")
            //    {
            //        MessageBox.Show("图书库存数不能为空，请输入图书库存数！！", "提示");
            //        textBkcsh.Focus();
            //    }
            //    else
            //    {

            //        textBkcsh.Enabled = false;
            //        textBgrsh.Enabled = true;
            //        textBgrsh.Focus();
            //    }
            //}
        }

        private void textBflh_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBflh.Text = "";
                textBflh.Enabled = false;
                textBbh.Enabled = true;
                textBbh.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {
               
                if (textBflh.Text == "")
                {
                    MessageBox.Show("图书分类号不能为空，请输入图书分类号！！", "提示");
                    textBflh.Focus();

                }
                else
                {

                    textBflh.Enabled = false;
                    textBshm.Enabled = true;
                    textBshm.Focus();
                }
            }
           
          

 
        }

        private void textBshm_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {
                

                textBshm.Text = "";
                textBshm.Enabled = false;
                textBflh.Enabled = true;
                textBflh.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {
                if (textBshm.Text == "")
                {
                    MessageBox.Show("图书书名不能为空，请输入图书书名！！", "提示");
                    textBshm.Focus();
                }
                else
                {

                    textBshm.Enabled = false;
                    textBlb.Enabled = true;
                    textBlb.Focus();
                }
            }
           

        }

        private void textBlb_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBlb.Text = "";
                textBlb.Enabled = false;
                textBshm.Enabled = true;
                textBshm.Focus();
            }
            
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBlb.Text == "")
                {
                    MessageBox.Show("图书类别不能为空，请输入图书类别！！", "提示");
                    textBlb.Focus();
                }
                else
                {

                    textBlb.Enabled = false;
                    textBzzh.Enabled = true;
                    textBzzh.Focus();
                }
            }

        }

        private void textBzzh_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBzzh.Text = "";
                textBzzh.Enabled = false;
                textBlb.Enabled = true;
                textBlb.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBzzh.Text == "")
                {
                    MessageBox.Show("图书作者不能为空，请输入图书作者！！", "提示");
                    textBzzh.Focus();
                }
                else
                {

                    textBzzh.Enabled = false;
                    textBchbsh.Enabled = true;
                    textBchbsh.Focus();
                }
            }
        }

        private void textBchbsh_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBchbsh.Text = "";
                textBchbsh.Enabled = false;
                textBzzh.Enabled = true;
                textBzzh.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBchbsh.Text == "")
                {
                    MessageBox.Show("图书出版社不能为空，请输入图书出版社！！", "提示");
                    textBchbsh.Focus();
                }
                else
                {

                    textBchbsh.Enabled = false;
                    textBbc.Enabled = true;
                    textBbc.Focus();
                }
            }
        }

        private void textBbc_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBbc.Text = "";
                textBbc.Enabled = false;
                textBchbsh.Enabled = true;
                textBchbsh.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBbc.Text == "")
                {
                    MessageBox.Show("图书版次不能为空，请输入图书版次！！", "提示");
                    textBbc.Focus();
                }
                else
                {

                    textBbc.Enabled = false;
                    textBkb.Enabled = true;
                    textBkb.Focus();
                }
            }

        }

        private void textBkb_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBkb.Text = "";
                textBkb.Enabled = false;
                textBbc.Enabled = true;
                textBbc.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBkb.Text == "")
                {
                    MessageBox.Show("图书开本不能为空，请输入图书开本！！", "提示");
                    textBkb.Focus();
                }
                else
                {

                    textBkb.Enabled = false;
                    textBzsh.Enabled = true;
                    textBzsh.Focus();
                }
            }
        }

        private void textBzsh_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBzsh.Text = "";
                textBzsh.Enabled = false;
                textBkb.Enabled = true;
                textBkb.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBzsh.Text == "")
                {
                    MessageBox.Show("图书字数不能为空，请输入图书字数！！", "提示");
                    textBzsh.Focus();
                }
                else
                {

                    textBzsh.Enabled = false;
                    textBjg.Enabled = true;
                    textBjg.Focus();
                }
            }
        }

        private void textBjg_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up")
            {


                textBjg.Text = "";
                textBjg.Enabled = false;
                textBzsh.Enabled = true;
                textBzsh.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBjg.Text == "")
                {
                    MessageBox.Show("图书价格不能为空，请输入图书价格！！", "提示");
                    textBjg.Focus();
                }
                else
                {

                    textBjg.Enabled = false;
                    // textBkcsh.Enabled = true;
                    textBkcsh.Text = "0";
                    //textBkcsh.Focus();
                    textBgrsh.Enabled = true;
                    textBgrsh.Focus();
                }
            }
        }

        private void textBgrsh_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode.ToString() == "Up"&&old==false)
            {


                textBgrsh.Text = "";
                textBgrsh.Enabled = false;
                textBjg.Enabled = true;
                textBjg.Focus();
            }
            if (e.KeyCode.ToString() == "Down")
            {

                if (textBgrsh.Text == "")
                {
                    MessageBox.Show("图书购入数不能为空，请输入图书购入数！！", "提示");
                    textBgrsh.Focus();
                }
                else
                {

                    textBgrsh.Enabled = false;
                    buttbc.Enabled = true;
                    buttbc.Focus();

                }
            }
        }
    }
}