blocks|key|4304520|text|您可以只使用for循环。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4304521|myControl.Items.Add(new+ListItem(string.Empty,+-1));
for(int+j+=+0;+j+<+100;+j%2B%2B)
{
++++var+newOption+=+new+ListItem("Item+#"+%2B+(j+%2B+1).ToString(),+j.ToString());
++++myControl.Items.Add(newOption);
}|code-block|syntax|javascript|4304522|entityMap^0|6|3|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You can just use a <code>for</code> loop.

<pre><code>myControl.Items.Add(new ListItem(string.Empty, -1));
for(int j = 0; j &lt; 100; j++)
{
 var newOption = new ListItem("Item #" + (j + 1).ToString(), j.ToString());
 myControl.Items.Add(newOption);
}
</code></pre>

blocks|key|2229358|text|combo.Items.Add("")
for+(int+i+=+0;+i+<+100;+i%2B%2B)
++combo.Items.Add(i)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2229359|另外，请考虑使用最大值为100的NumericUpDown控件。这不会给你一个空白的选择，但可以说是一个更好的可用性选择。|unstyled|offset|length|2229360|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/729xt55s.aspx^0|0|G|D|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>combo.Items.Add("")
for (int i = 0; i &lt; 100; i++)
 combo.Items.Add(i)
</code></pre>

Also, consider using a <a href="http://msdn.microsoft.com/en-us/library/729xt55s.aspx" rel="nofollow">NumericUpDown</a> control with a maximum value of 100. This won't give you the blank choice, but is an arguably nicer usability choice.

blocks|key|4304563|text|如果您绑定了列表(数组、集合等)作为下拉菜单中的数据源(winforms？webforms?)总是会有创建的项目。如果你不想手动添加每一项，你可以用代码来完成：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4304564|//+this+code+is+for+winforms
dropDown.Items.Clear();
dropDown.Items.Add(+string.Empty+);
for(int+i+=+0;+i+<=+100;+i%2B%2B+)+{
++++dropDown.Items.Add(+i.ToString()+);
}|code-block|syntax|javascript|4304565|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|$]]

If you bound the list (array, collection, etc...) as datasource into the dropdown (winforms? webforms?) there always will created items. If you don't want add each item manualy, you can do it with code:

<pre><code>// this code is for winforms
dropDown.Items.Clear();
dropDown.Items.Add( string.Empty );
for(int i = 0; i &lt;= 100; i++ ) {
 dropDown.Items.Add( i.ToString() );
}
</code></pre>

blocks|key|609152|text|如果这是webforms：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|609153|我想你希望在你的page_load事件中有这样的东西。|609154|if(Page.IsNotPostBack)
{
++++DropDownList1.Items.Add(new+ListItem("",""));
++++for(int+i+=+0;+i+<=+100;+i%2B%2B)
++++++++DropDownList1.Items.Add(new+ListItem(i.ToString(),+i.ToString());
}|code-block|syntax|javascript|609155|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If this is webforms: 
I imagine you want something like this in your page_load event.

<pre><code>if(Page.IsNotPostBack)
{
 DropDownList1.Items.Add(new ListItem("",""));
 for(int i = 0; i &lt;= 100; i++)
 DropDownList1.Items.Add(new ListItem(i.ToString(), i.ToString());
}
</code></pre>

blocks|key|609178|text|创建一个实用程序来生成值：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|609179|public+class+Utils
{
++++public+static+IEnumerable<string>+GetSequenceEntries(long+maxValue)
++++{
++++++++yield+return+string.Empty;

++++++++for(int+i=1;+i<=maxValue;+i%2B%2B)
++++++++{
++++++++++++yield+return+i.ToString();
++++++++}
++++}
}|code-block|syntax|javascript|609180|然后，对于WinForms应用程序，可以像这样绑定它：|609181|private+void+Form1_Load(object+sender,+EventArgs+e)
{
++++comboBox1.DataSource+=+Utilities.Utils.GetSequenceEntries(100).ToList<string>();
}|609182|或者对于ASP.NET，像这样绑定它：|609183|protected+void+Page_Load(object+sender,+EventArgs+e)
{
++++ddl1.DataSource+=+Utilities.Utils.GetSequenceEntries(100);
++++ddl1.DataBind();
}|609184|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Create a utility to generate your values:

<pre><code>public class Utils
{
 public static IEnumerable&lt;string&gt; GetSequenceEntries(long maxValue)
 {
 yield return string.Empty;

 for(int i=1; i&lt;=maxValue; i++)
 {
 yield return i.ToString();
 }
 }
}
</code></pre>

Then for a WinForms application bind it similar to this:

<pre><code>private void Form1_Load(object sender, EventArgs e)
{
 comboBox1.DataSource = Utilities.Utils.GetSequenceEntries(100).ToList&lt;string&gt;();
}
</code></pre>

Or for ASP.NET bind it like this:

<pre><code>protected void Page_Load(object sender, EventArgs e)
{
 ddl1.DataSource = Utilities.Utils.GetSequenceEntries(100);
 ddl1.DataBind();
}
</code></pre>

blocks|key|4304633|text|这里有一种方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4304634|ddl.Items.AddRange(Enumerable.Range(0,+100).Select+(e+=>+new+ListItem(e.ToString())).ToArray());|code-block|syntax|javascript|4304635|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|$]]

Here is one way of doing it:

<pre><code>ddl.Items.AddRange(Enumerable.Range(0, 100).Select (e =&gt; new ListItem(e.ToString())).ToArray());
</code></pre>

blocks|key|4304649|text|例如在asp.net+MVC中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4304650|控制器：|4304651|ViewData["list"]+=+new+SelectList(Enumerable.Range(0,+101)
++++++++++++++++.Select(p+=>+new+SelectListItem()+{+Text+=+p.ToString(),+Value+=+p.ToString()+}));|code-block|syntax|javascript|4304652|查看：|4304653|<%25=Html.DropDownList("numbers",+ViewData["list"]+as+SelectList,+"Select+a+number")+%25>|4304654|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For instance in asp.net MVC:

Controller:

<pre><code>ViewData["list"] = new SelectList(Enumerable.Range(0, 101)
 .Select(p =&gt; new SelectListItem() { Text = p.ToString(), Value = p.ToString() }));
</code></pre>

View:

<pre><code>&lt;%=Html.DropDownList("numbers", ViewData["list"] as SelectList, "Select a number") %&gt;
</code></pre>

blocks|key|4304669|text|vb:|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4304670|For+i+As+Integer+=+0+To+100
++++++++++++++++ddlperiod.Items.Add(i)
++++++++++++Next|code-block|syntax|javascript|4304671|entityMap^0|0|3|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

vb:

<pre><code>For i As Integer = 0 To 100
 ddlperiod.Items.Add(i)
 Next
</code></pre>

blocks|key|4304675|text|ddl.DataSource+=+Enumerable.Range(1,+100);
ddl.DataBind();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4304676|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>ddl.DataSource = Enumerable.Range(1, 100);
ddl.DataBind();
</code></pre>

Sorry if this is a dumb question ... I'm just trying to learn the best way to do it. Basically I want to have a dropdown list with values blank and then 0 - 100. 

Whats is the best way to do this without manually entering each one. I imagine it is through some form of a list bound to the dropdown. 

Thankyou in advance for the help.

C# Dropdown items 0 - 100 without adding each item?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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抱歉如果这是个愚蠢的问题..。我只是想学习做这件事的最好方法。基本上，我希望有一个下拉列表，其值为空，然后是0- 100。什么是最好的方法来做到这一点，而无需手动输入每个。我想它是通过绑定到下拉列表的某种形式的列表实现的。提前感谢你的帮助。

问C#下拉项目0- 100而不添加每个项目？
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