How many conditions as time screening fuzzy query

How many conditions as time screening fuzzy query

文献种类:专题技术文献;
开发工具与关键技术:Vs
作者:蛋蛋;
撰写时间:2019/05/26
  1. After know the property is DateTime time we are often in the table after a query plus
    ReceptionTime = tbReception.ReceptionTime.ToString (); // Reception times
    ToString (); method can be the array to a string and returns the result
    Note : when Boolean string object is used to the environment, this method will be automatically returns the string "true" value of the original in accordance with Boolean or booleanObject object or "false".
    The results determined by the value of a variable of type Number toString () method is rather special, it has two modes, i.e., the default mode and group mode. Default mode, toString () method except that the corresponding string output digital value (either integer, floating point or scientific notation
    var iNum1 = 10;
    var iNum2 = 10.0;
    Alert (iNum1.toString ()); // Output "10"
    Alert (iNum2.toString ()); // outputs "10"
    Note: in default mode, no matter what the initial statement represented using a digital method, number the type toString () method returns the decimal numbers are represented. Therefore, the digital octal or hexadecimal literals in the form of a statement of the output is in decimal form


    according to the previous article we already know are in the name = "" (consistent with the database field names) in the list and need to change the name later declare new name;
    we know that if multi-condition screening when necessary to distinguish between an int or string type int type:
    main course is the primary key ID is the same in name = "** ID";
    Because the form is submitted it is necessary to transfer between the table and the table,
    this time the name = "" on the transfer as a condition // Get the query
    var ReceptionTime = $ ( "# SReceptionID ") val ();.
    This time a little bit different, typically int type, string type requires to add a step Analyzing
    int type
    : IF (ID ** = "" ** || ID = undefined) {** ID = 0;}
    String type: if (** Name == undefined) {** Name = "";}
    and the time is not necessary that the same portion Html Lambda expressions need to make a further detailed judgment in which the controller;
    // time is not empty
    if (string.IsNullOrEmpty (ReceptionTime)! )
    {
    the try {
    the DateTime = dtreleaseTime to Convert.ToDateTime (ReceptionTime);
    the DateTime = endTime to Convert.ToDateTime (ReceptionTime) .AddDays (. 1);
    listClient = listClient.Where (m => m.ReceptionTime> = dtreleaseTime && m.ReceptionTime <endTime ) .ToList ();}
    the catch (Exception E)
    {Console.WriteLine (E);}}
    Because when we check the data he had converted to a string type, but with respect to the determination condition which is no longer ID == ID, or string type .Contains (); selector to select the specified character string element; is often used with other elements / selector together, select elements of the specified time contained in the group specified in the text: for determining size;
    three cases
    1. select one of the foregoing date;
    2. selects one later date;
    3. equal to the time of day;
    judgment I make is to get the first try () catch of the day and then inside to add AddDays (1);
    a full day's data is to select a piece of data that day that new day from 00:00 to 24:00 the end of this day's data

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Origin blog.csdn.net/qq_42577408/article/details/90581601