Doing student records management system query in this feature, I want to use the query to get the teacher's last name, taught courses and contact phone number that information, shown in the TEXTBOX, but some can run after the query button, but showed no TEXTBOX, said after watching the monitoring item string has a problem, how to change that, I cried, a little nasty, strives for the great god on demand,

CodePudding user response:

this is my T table of contents,

CodePudding user response:

The tostring () to determine when to empty, empty so I make a mistake,

CodePudding user response:

refer to the second floor mingcsharp response:

tostring () to determine when to not empty, empty so I make a mistake,

Thank you, have to solve the

CodePudding user response:

Now teaching really is too backward, still use the Dataset to this one,

CodePudding user response:

Alas,,, look at the interface and code, is really in a hurry, there is no use, now a lot of leather bags take this fool of party a, there is no help for his stupidity, public relations ability,

CodePudding user response:

reference 5 floor jhonsonzhang reply:

alas,,, look at the interface and code, is really in a hurry, there's nothing in the forehead, now a lot of leather bags take this fool to party a, there is no help for his stupidity, somebody else's public relations ability,

Do you want to many, the original poster is a student, homework to the

CodePudding user response:

So this is step by step

CodePudding user response:

refer to 7th floor gypsy song response:

Quote: refer to the fifth floor jhonsonzhang reply:

Alas,,, look at the interface and code, is really in a hurry, there's nothing in the forehead, now a lot of leather bags take this fool to party a, there is no help for his stupidity, somebody else's public relations ability,

Do you want to many, the original poster is a student, homework to the

Right, homework curriculum design

CodePudding user response:

reference 4 floor of the knights templar 18 response:

now teaching really is too backward, still use the Dataset to this one,

The DATASET is quite good with ah, very basic, teaching books should be in the right, or learn what collection

CodePudding user response:

Undergraduate course colleges and universities there are very few open the c # programming

CodePudding user response:

references to the tenth floor of curiosity is to learn response:

Quote: refer to the knights templar, 4/f, 18 response:

Now teaching really is too backward, still use the Dataset to this one,

The DATASET rather easy to use, is the foundation, teaching books should be in the right, or learn what collection

A society is out of date, very miserably,

CodePudding user response:

+ the try, generally can prompt exception information

CodePudding user response:

refer to 12 floor of the knights templar 18 reply:

Quote: reference to the tenth floor of curiosity is to learn response:

Quote: refer to the knights templar, 4/f, 18 response:

Now teaching really is too backward, still use the Dataset to this one,

The DATASET rather easy to use, is the foundation, teaching books should be in the right, or learn what collection

A society is out of date, very miserably,

But the school only responsible for to learn the basic theory of ah! As long as a foundation to work after his fill!

Software technology update quickly, it is impossible for a teaching material to the latest on the development of software technology,