解决方法

这是我正在阅读的一个示例文件,只有一个字段.引号是文件内容的一部分,有三个换行符(包括第2行后的两个连续换行符)：

"This is line 1
This is line 2

This is line 4,which follows two consecutive newlines."

这是我用来解析和读取文件的代码：

Dim reader as New Microsoft.VisualBasic.FileIO.textfieldparser(myFile,System.Text.Encoding.Default)
reader.TextFieldType = FileIO.FieldType.Delimited
reader.SetDelimiters(",")

Dim fields As String() = reader.ReadFields
Dim line As String = fields(0)

这是“行”变量的内容.请注意,现在只有两个新行：

This is line 1
This is line 2
This is line 4,which follows two consecutive newlines.

我该怎么做才能保留连续的换行符？

If ReadFields encounters blank lines,
they are skipped and the next
non-blank line is returned.

我相信你需要做的是使用ReadLine http://msdn.microsoft.com/en-us/library/microsoft.visualbasic.fileio.textfieldparser.readline.aspx然后循环结果.

Using MyReader As New Microsoft.VisualBasic.FileIO.textfieldparser("C:\ParserText.txt")
    MyReader.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited
    MyReader.Delimiters = New String() {","}
    Dim currentRow As String
    While Not MyReader.EndOfData
        Try
            currentRow = MyReader.ReadLine()
            'Manipulate line...
        Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
            MsgBox("Line " & ex.Message & " is invalid.  Skipping")
        End Try
    End While
End Using

解决方法

<asp:GridView runat="server" ID="GV1" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField datafield="Name" HeaderText="Name" />
        <asp:BoundField datafield="Age" HeaderText="Age" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button runat="server" Text="Reject" 
                Visible='<%# IsOverAgeLimit((Decimal)Eval("Age")) %>' 
                CommandName="Select"/>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected Boolean IsOverAgeLimit(Decimal Age) {
    return Age > 35M;
}

package www.cn.extend;

/** Animal
 * 2019/07/04 
 * @author Administrator
 *
 */
public class Animal {
    
    public String mName;
    public String mSex;
    private String mSecret = "I hava a secret but I can''t tell you know";
 
    public String getSecret() {
        return mSecret;
    } 

    private void privateMethod() {
        System.out.println("just a privateMethod");
    }
}

package www.cn.extend;

/**
 * Dog
 * @author Administrator
 *
 */
public class Dog extends Animal{
    private String mJob;
    public String mSkill;
    protected String mDrive;
    int mAge;

    void keepFit(){
        System.out.println(Dog.class.getSimpleName()+" to keepFit");
    }

    private void sooEsad(){
        System.out.println("asdf");
    }
}
 

package www.cn.extend;

import java.lang.reflect.Method;

public class Test {

    public static void main(String[] args){
        
        /**.class.getFields();
         * 返回父类和子类中公共属性的Field数组。
         */
//        Field[] fields = Dog.class.getFields();
//        for (Field field:fields){ 
//            System.out.println("this is a field from "+Dog.class.getSimpleName() +" : "+field);
//        }
        
        /**.class.getDeclaredFields();
         * 返回子类中所有访问权限的属性。
         */
//        Field[] declaredFields = Dog.class.getDeclaredFields();
//        for (Field field:declaredFields){
//            System.out.println("this is a declaredFields from "+Dog.class.getSimpleName() +" : "+field);
//        }

        /**.class.getMethods();
         * 返回父类的公共方法
         */
//        Method[] methods = Dog.class.getMethods();
//        for (Method method:methods){
//            System.out.println("this is a methods from "+Dog.class.getSimpleName() +" : "+method);
//        }
        
        /**.class.getDeclaredMethods();
         * 返回子类所有权限的方法。
         */
        Method[] declaredMethods = Dog.class.getDeclaredMethods();
        for (Method method:declaredMethods){
            System.out.println(declaredMethods[0].getName());
            System.out.println("this is a declaredMethods from "+Dog.class.getSimpleName() +" : "+method);
        }
        
    }
    
}

我有一个带有事件的单独Datefield和Timefield的Django模型。有没有一种方法可以将其转换为python
datetime对象，以便我可以精确地查询即将发生的事件？目前，我只知道第二天的到来。

models.py

event_time = models.TimeField()
event_date = models.DateField()

基本上，我可以过滤一分钟，甚至一秒钟吗？

谢谢。