我想根据数据库中的值检查单选按钮 [英] i want to checked the radio button according to value in database

问题描述

if (dt.Rows[0]["Gender"] == "Male")
    rdomale.Checked = true;
else
    rdofemale.Checked = true;

推荐答案

您调试了吗?
请注意，等于运算符==是区分大小写:如果在数据库中Gender存储为"male"，则将出现不匹配的情况(然后可以使用String.Equals方法，请参见> Stack Overflow上是否存在C#不区分大小写的等于运算符?" [^ ]).

Did you debug it?
Note that equal operator == is case sensitive: if in the database Gender is stored as "male" then you get a mismatch (you may then use the String.Equals method, see "Is there a C# case insensitive equals operator?" at Stack Overflow[^]).

您必须将数据表中的数据转换为字符串

尝试这种方式:

You have to convert data from DataTable into string

try this way:

if (dt.Rows[0]["Gender"].ToString().Trim().ToLower() == "male")
    rdomale.Checked = true;
else
    rdofemale.Checked = true;

请注意男性"和男性"的变化，因为我已经使用ToLower()进行了准确的比较.

note the change in "Male" and "male", because i have used ToLower() for accurate comparison.

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