排序 DropDownList?- C#, ASP.NET [英] Sorting a DropDownList? - C#, ASP.NET

问题描述

我很好奇在 C#/ASP.NET 中对 DropDownList 进行排序的最佳途径(更多的是寻求简单性，而不是速度或效率) - 我已经查看了一些建议，但它们并没有很好地点击我.

I'm curious as to the best route (more looking towards simplicity, not speed or efficiency) to sort a DropDownList in C#/ASP.NET - I've looked at a few recommendations but they aren't clicking well with me.

伙计们，我无法控制数据如何进入 DropDownList - 我无法修改 SQL.

Folks, I do not have control over how the data comes into the DropDownList - I cannot modify the SQL.

推荐答案

如果你得到一个包含数据的 DataTable，你可以创建一个 DataView，然后将下拉列表绑定到那个.您的代码看起来像...

If you get a DataTable with the data, you can create a DataView off of this and then bind the drop down list to that. Your code would look something like...

DataView dvOptions = new DataView(DataTableWithOptions);
dvOptions.Sort = "Description";

ddlOptions.DataSource = dvOptions;
ddlOptions.DataTextField = "Description";
ddlOptions.DataValueField = "Id";
ddlOptions.DataBind();

您的文本字段和值字段选项会映射到您收到的数据表中的相应列.

Your text field and value field options are mapped to the appropriate columnns in the data table you are receiving.

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