blocks|key|810573|text|(1000000000,9999999999)不是随机的--你强制要求它不能以1开头，所以你已经削减了10%25的目标基数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|810574|Random是一个双精度数，所以如果你想要一个整数，将它乘以1,000,000,000，然后删除小数点后的数字。|810575|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

(1000000000,9999999999) is not random - you're mandating that it cannot begin with a 1, so you've already cut your target base by 10%. 

Random is a double, so if you want a integer, multiply it by 1,000,000,000, then drop the figures after the decimal place.

blocks|key|595123|text|尝试(尽管不是绝对准确)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|595124|Random+R+=+new+Random();

return+((long)R.Next+(0,+100000+)+*+(long)R.Next+(0,+100000+)).ToString+().PadLeft+(10,+'0');|code-block|syntax|javascript|595125|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

try (though not absolutely exact)

<pre><code>Random R = new Random();

return ((long)R.Next (0, 100000 ) * (long)R.Next (0, 100000 )).ToString ().PadLeft (10, '0');
</code></pre>

blocks|key|595177|text|在C#中生成一个随机的10位数|type|unstyled|depth|inlineStyleRanges|entityRanges|data|595178|Random+RndNum+=+new+Random();+++

int+RnNum+=+RndNum.Next(1000000000,9999999999);|code-block|syntax|javascript|595179|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To generate a random 10 digit number in C#

<pre><code>Random RndNum = new Random(); 

int RnNum = RndNum.Next(1000000000,9999999999);
</code></pre>

blocks|key|810673|text|private+static+Random+random+=+new+Random((int)DateTime.Now.Ticks);//thanks+to+McAden

public+long+LongBetween(long+maxValue,+long+minValue)
{
++++return+(long)Math.Round(random.NextDouble()+*+(maxValue+-+minValue+-+1))+%2B+minValue;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|810674|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>private static Random random = new Random((int)DateTime.Now.Ticks);//thanks to McAden

public long LongBetween(long maxValue, long minValue)
{
 return (long)Math.Round(random.NextDouble() * (maxValue - minValue - 1)) + minValue;
}
</code></pre>

blocks|key|595197|text|private+void+button1_Click(object+sender,+EventArgs+e)
{
+++Random+rand+=+new+Random();
+++long+randnum2+=+(long)(rand.NextDouble()+*+9000000000)+%2B+1000000000;
+++MessageBox.Show(randnum2.ToString());
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|595198|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>private void button1_Click(object sender, EventArgs e)
{
 Random rand = new Random();
 long randnum2 = (long)(rand.NextDouble() * 9000000000) + 1000000000;
 MessageBox.Show(randnum2.ToString());
}
</code></pre>

blocks|key|595272|text|使用此选项可创建具有任意指定长度的随机数字|type|unstyled|depth|inlineStyleRanges|entityRanges|data|595273|public+string+RandomDigits(int+length)
{
++++var+random+=+new+Random();
++++string+s+=+string.Empty;
++++for+(int+i+=+0;+i+<+length;+i%2B%2B)
++++++++s+=+String.Concat(s,+random.Next(10).ToString());
++++return+s;
}|code-block|syntax|javascript|595274|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Use this to create random digits with any specified length 

<pre><code>public string RandomDigits(int length)
{
 var random = new Random();
 string s = string.Empty;
 for (int i = 0; i &lt; length; i++)
 s = String.Concat(s, random.Next(10).ToString());
 return s;
}
</code></pre>

blocks|key|595309|text|//+ten+digits+
public+string+CreateRandomNumber
{
++++get
++++{
++++++++//returns+10+digit+random+number+(Ticks+returns+16+digit+unique+number,+substring+it+to+10)
++++++++return+DateTime.UtcNow.Ticks.ToString().Substring(8);+
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|595310|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>// ten digits 
public string CreateRandomNumber
{
 get
 {
 //returns 10 digit random number (Ticks returns 16 digit unique number, substring it to 10)
 return DateTime.UtcNow.Ticks.ToString().Substring(8); 
 }
}
</code></pre>

blocks|key|810859|text|要在没有任何循环的情况下获得任意位数，请使用Random.Next，并设置适当的限制为100...00,9999...99。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|810860|private+static+readonly+Random+_rdm+=+new+Random();
private+string+PinGenerator(int+digits)
{
+++if+(digits+<=+1)+return+"";

+++var+_min+=+(int)Math.Pow(10,+digits+-+1);
+++var+_max+=+(int)Math.Pow(10,+digits)+-+1;
+++return+_rdm.Next(_min,+_max).ToString();
}|code-block|syntax|javascript|810861|此函数计算第n位数的下界和上界。|810862|要生成10位数字，请像这样使用它：|810863|PinGenerator(10)|810864|entityMap^0|M|B|0|0|0|0|0|G|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

To get the any digit number without any loop, use <code>Random.Next</code> with the appropriate limits [100...00, 9999...99].

<pre><code>private static readonly Random _rdm = new Random();
private string PinGenerator(int digits)
{
 if (digits &lt;= 1) return "";

 var _min = (int)Math.Pow(10, digits - 1);
 var _max = (int)Math.Pow(10, digits) - 1;
 return _rdm.Next(_min, _max).ToString();
}
</code></pre>

This function calculated the lower and the upper bounds of the nth digits number.

To generate the 10 digit number use it like this:

<code>PinGenerator(10)</code>

blocks|key|595376|text|Random+random+=+new+Random();
string+randomNumber+=+string.Join(string.Empty,+Enumerable.Range(0,+10).Select(number+=>+random.Next(0,+9).ToString()));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|595377|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>Random random = new Random();
string randomNumber = string.Join(string.Empty, Enumerable.Range(0, 10).Select(number =&gt; random.Next(0, 9).ToString()));
</code></pre>

blocks|key|595442|text|我想出这个方法是因为我不想使用Random方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|595443|public+static+string+generate_Digits(int+length)
{
++++var+rndDigits+=+new+System.Text.StringBuilder().Insert(0,+"0123456789",+length).ToString().ToCharArray();
++++return+string.Join("",+rndDigits.OrderBy(o+=>+Guid.NewGuid()).Take(length));
}|code-block|syntax|javascript|595444|希望这能有所帮助。|595445|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I came up with this method because I dont want to use the Random method :

<pre><code>public static string generate_Digits(int length)
{
 var rndDigits = new System.Text.StringBuilder().Insert(0, "0123456789", length).ToString().ToCharArray();
 return string.Join("", rndDigits.OrderBy(o =&gt; Guid.NewGuid()).Take(length));
}
</code></pre>

hope this helps.

blocks|key|810952|text|我试着写一个快速的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|810953|private+int+GetNDigitsRandomNumber(int+digits)
{
++++var+min+=+1;
++++for+(int+i+=+0;+i+<+digits-1;+i%2B%2B)
++++{
++++++++++min+*=+10;
++++}
++++var+max+=+min+*+10;

++++return+_rnd.Next(min,+max);
}|code-block|syntax|javascript|810954|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I tried to write a fast one:

<pre><code>private int GetNDigitsRandomNumber(int digits)
{
 var min = 1;
 for (int i = 0; i &lt; digits-1; i++)
 {
 min *= 10;
 }
 var max = min * 10;

 return _rnd.Next(min, max);
}
</code></pre>

blocks|key|595655|text|下面是一个使用格式化字符串的简单解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|595656|string+r+=+$"{random.Next(100000):00000}{random.Next(100000):00000}";|code-block|syntax|javascript|595657|随机10位数(可能带有前导零)是两个随机5位数的并集。格式字符串"00000“表示如果数字小于5位，则会附加前导零(例如，1将格式化为"00001")。|595658|有关"0“自定义格式说明符的更多信息，请参阅documentation。|offset|length|595659|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings#Specifier0^0|0|0|0|M|D|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Here is a simple solution using format string:
<pre><code>string r = $&quot;{random.Next(100000):00000}{random.Next(100000):00000}&quot;;
</code></pre>
Random 10 digit number (with possible leading zeros) is produced as union of two random 5 digit numbers. Format string &quot;00000&quot; means leading zeros will be appended if number is shorter than 5 digits (e.g. 1 will be formatted as &quot;00001&quot;).
For more about the &quot;0&quot; custom format specifier please see the <a href="https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings#Specifier0" rel="nofollow noreferrer">documentation</a>.

I'm using C# and I need to generate a random 10 digit number. So far, I've only had luck finding examples indicating min maximum value. How would i go about generating a random number that is 10 digits, which can begin with 0, (initially, I was hoping for <code>random.Next(1000000000,9999999999)</code> but I doubt this is what I want).

My code looks like this right now:

<pre><code>[WebMethod]
public string GenerateNumber()
{
 Random random = new Random();
 return random.Next(?);
}
</code></pre>

**Update ended up doing like so,

<pre><code>[WebMethod]
public string GenerateNumber()
{
 Random random = new Random();
 string r = "";
 int i;
 for (i = 1; i &lt; 11; i++)
 {
 r += random.Next(0, 9).ToString();
 }
 return r;
}
</code></pre>

How to generate a random 10 digit number in C#?

我使用的是C#，我需要生成一个随机的10位数。到目前为止，我只幸运地找到了表示最小最大值的示例。我如何生成一个10位数字的随机数，它可以从0开始，(最初，我希望是random.Next(1000000000,9999999999)，但我怀疑这是我想要的)。我的代码现在看起来像这样：[WebMethod]public s...

问如何在C#中生成一个随机的10位数？
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