小编And*_*yev的帖子

我想从我试过的文本文件中读取数据,但它显示错误显示文件路径中的错误

string txtfile = File.ReadAllText("D:\Temp\textdata.txt");
string txtdata = File.ReadAllText("D:\Temp\textstrings.txt");
string txtpara = File.ReadAllText("D:\Temp\textlines.txt");

Console.WriteLine(txtfile);
Console.WriteLine("\n");
Console.WriteLine("\n");
Console.WriteLine(txtpara);
Console.WriteLine("\n");
Console.WriteLine("\n");
Console.WriteLine("\n");
Console.WriteLine(txtdata);

我的文件已保存 d:\temp\textdata.txt

有人能告诉我吗？

好吧,我坚持使用未分配的局部变量.我首先声明我的变量并创建我的字典.

在我的代码下面:

string berichtAantalMunten;
double[] munten = { 2,1,0.50,0.20,0.10,0.05};
Dictionary<double, int> aantalMunten = new Dictionary<double, int>();
int muntenTeller = 0;
double bedragTerug = totaalIngeworpen - prijsDrankje;
foreach (double munt in munten){
    double tijdelijkIngeworpen = totaalIngeworpen - munt;

    if (tijdelijkIngeworpen >= 0)
    {
        muntenTeller++;
        aantalMunten.Add(munt, muntenTeller);
        totaalIngeworpen = tijdelijkIngeworpen;
    }
}

if (aantalMunten.ContainsKey(2))
{
    berichtAantalMunten = aantalMunten[2].ToString() + " x € 2,00\n";
}

if (aantalMunten.ContainsKey(1))
{
    berichtAantalMunten +=  aantalMunten[1].ToString() + " x € 1,00\n";
}

我的C#代码一直给我一个错误的转换结果.据我所知,转换公式是正确的,但它仍然显示错误的结果.

例如:70°F给我12,777777°C.你能检查一下我的代码吗？

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Temperature
{
    class Program
    {    
        class Temperature
        {
            public double temp;

            public void Convert(double value)
            {
                double tEmp;
                tEmp = (value - 32) / 1.8;
                Console.WriteLine("The temperature in °C is :" + tEmp);
                Console.ReadKey();
            }
        }

        static void Main(string[] args)
        {
            double f;
            Temperature c = new Temperature();
            f = Console.Read();
            c.Convert(f);
        }
    }
}

当我29/07/1990在文本框中书写时,此代码似乎不起作用.它总是转到else语句.

  string date = tbDate.Text;

  DateTime Test;
  if (DateTime.TryParseExact(date, "MM/dd/yyyy", null, DateTimeStyles.None, out Test) == true) {
    Console.WriteLine("Date OK");
  } else {
    Console.WriteLine("Date Not OK");
  }

这是我的代码:

float SmoothNoise(float x, float y)
{
    float fractX = x - (int)x;
    float fractY = y - (int)y;

    float x1 = ((int)x + noiseWidth) % noiseWidth;
    float y1 = ((int)y + noiseHeight) % noiseHeight;

    float x2 = ((int)x + noiseWidth - 1f) % noiseWidth;
    float y2 = ((int)y + noiseHeight - 1f) % noiseHeight;

    float value = 0f;

    value += fractX * fractY * noise[x1, y1];
    value += fractX * (1f - fractY) * noise[x1, y2];
    value += (1f …

我有一个临时表#allocations,它有以下字段

DAllocationId   DAllocationName FundCode    DSplitTotal DDisabled   DistAlloc   AAllocationId AAllocationName   ASplitTotal ADisabled

我有另一个表TRAN_POST_PTN,它还包含这些列以及其他列.因此对于asplit id和dsplit id,我们只有相同的列名,即TRAN_POST_PTN中的"发布号码".

我需要做的是在我的分配表中插入来自TRAN_POST_PTN的所有行

posting_number is not in (select DAllocationId from #allocations) 
and posting_number not in (select AAllocationId from #allocations)

我不想在这里使用Not.

有人可以建议我更好的方式来编写这个查询.我尝试使用union编写它,但这不起作用.

我得到错误" INCORRECT SYNTAX NEAR''.

这是我的代码:

SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Mr\Documents\Student.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.Parameters.Clear();
cmd.CommandText = "insert into tblHesabdary(Shahriye Koll,Pardakhty,Mablagh,Naghdy - Shomare Fish,Albaghy,Name,Family)values(@SK,@P,@M,@NSF,@A,@N,@F)";
cmd.Parameters.AddWithValue("@SK", shahriye_KollTextBox.Text);
cmd.Parameters.AddWithValue("@P", pardakhtyTextBox.Text);
cmd.Parameters.AddWithValue("@M", mablaghTextBox.Text);
cmd.Parameters.AddWithValue("@NSF", naghdy___Shomare_FishTextBox.Text);
cmd.Parameters.AddWithValue("@A", albaghyTextBox.Text);
cmd.Parameters.AddWithValue("@N", nameTextBox.Text);
cmd.Parameters.AddWithValue("@F", familyTextBox.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
MessageBox.Show("jj");

我的数据库是SQL Server Express.

我一直很难将我的变量值从表单1传输到我的form2.问题是我想在Form2加载时在Form2 textBoxes中显示我在Form1中初始化的结果(当我单击相应的按钮时,它会显示一个ShowDialog()).

我的问题是结果不在我的Form2中传输,给我的所有变量一个0值.

这是我在表格中的内容:

//Variables in my Form 1

public partial class Form1 : Form
{
   public static double VAR_1 = 1;
   public static double VAR_2 = 2;
   public static double VAR_3 = 3;

   //Here I put all my textBoxes and other methods of the class
}

//Variables in my Form 2

public partial class Form2 : Form
{
    private void Form2_Load(object sender, EventArgs e)
    {
         this.textBox1.Text = Form1.VAR_1.ToString();
         this.textBox2.Text = Form1.VAR_2.ToString();
         this.textBox3.Text = Form1.VAR_3.ToString();
    }
}