How can you use datalist if there is no data or the data is not enough to fill a page, and each row

I think your idea is weird! When you don't have enough data, you want to add some to fill up the number yourself, just for the sake of the interface! You can put all the data into the datatable and then calculate how many rows are less according to the pagesize, and then you can write a loop to add data to the datatable how many rows of data, and then bind the data!

I think the method will definitely work! But I think it's unpleasant to sacrifice performance for the sake of the interface! Or you can try doing the same with CSS!

It would be much better!

You can add a method in your background...

public string showrevercontent(string revercontent)

if(<=0)

revercontent="None";

return revercontent;

Then in the foreground you may be empty on that field on the binding.

#showrevercontent(,"The name of the field").tostring())

Since I'm afraid of destroying the style, I have to have data in it, and I'm afraid that it's not good to look at it without data, but what to show in the datalist without data depends on what lz thinks.

What kind of pagination are you using? Is it the control that comes with it? Or do you write it yourself, or do you use a three-way control?

You can use the three-party control aspnetpager

Take as much as you want.

100,000 pieces of data are also loaded at once?

Double loop, this is simple.

It's a bit complicated to write.

Step 1: Put a hidden in the first loop, and the hidden value is the id, for example:

Step 2: Very critical, after the datalist is bound, an itemDatabound event will be triggered, right-click "Properties" click on the lightning icon "select the event to see, double-click this event will automatically generate a method in the background:

protected void datalist1_itemdatabound(object sender, datalistitemeventargs e)

The same goes for multiple loops, and so on.

This doesn't seem to be a way, in fact, you can consider other ways to solve this problem, datalist is a weak type, you can consider using dictionary

Dictionarydd=new Dictionaryt: Define an entity class int: your id that defines the entity class in the datalist table

So I made a datalist nested and noisy pants Jing Chun hunger two datalist a datalist is a radio button to put in your loop These two dlsecond and dlthird data sources are exactly the same, of course, there is a mistake Judge whether it is.

Just write SQL statements!

The display type of the datalist needs to be set first, and then the data must be bound.

The datalist must have a template, and the gridview will automatically generate columns.

This shouldn't be a problem, you can try executereader();

See if there's anything wrong with the front desk and template columns.

The number of records obtained in the query in CS. If the number of records is equal to zero, the datalist hides the output "No data yet".

That's the problem with your data bonding!

No data shows! That's probably the reason for most of it!

No Bonding Good!

Is your database connected?。。

Those that use findcontrol to get out of the content plus. text, you need to put the front in parentheses

Like what. ((label)"Country label"))text

1. Select distinct name from users from the database aspect

2. If the same data in your datalist is ordered (the same id together) eg: id11

23. Use the following method (principle: the same ID is only taken once):

for(int x = 0;x < x++)3, if the same data in your datalist is out of order (the same IDs may not be together).

eg： id12

31. Use the following method (here to take out the no duplicate ID as an example):

[ Create a result object ].

listlistresult=new list();

[ Loop datalist ].

for(int i = 0;i < i++)else

[ Remove the ID from the datalist that has been added to the result object ];

When the loop ends, the value in the listresult list is the result you wantlistresult[0]=1;

listresult[1]=2;

listresult[2]=3;

It has nothing to do with datalist. Add the keyword distinct to your SQL statement.

Select distinct name from users If you cannot change the SQL statement or the data source is not a database, you need to clean up the dataset before binding the data to the datalist, which will be more cumbersome. It involves issues such as algorithm optimization. The dumbest idea is to do a two-tier loop and compare them one by one.

Remove the same.

for(int x = 0; x < x++)