从Datagridview中删除前50行 [英] Delete First 50 rows from Datagridview

问题描述

我的代码是



Dim p As Integer = 0

for p = 0 to 49

datagridview1.Rows.RemoveAt（p）

下一页





如果我运行此代码它只删除奇数数字行，但我想删除行数据







请帮助。

解决方案

我认为你在逻辑上有错误。

即

 datagridview1.Rows .RemoveAt（p）

删除索引的行。删除行后，刷新整个网格索引。

假设你有



索引0 =第1行

索引1 =第2行

索引2 =第3行

-----------------

--------- --------等等



在循环中（当p = 0时）

row1（索引0）已删除索引已刷新。

即网格变为



索引0 =第2行

索引1 =第3行

-----------------

--------------- -


第二次循环
（当p = 1时）

第3行被删除。使用当前索引（1）...所以你的循环只删除奇数行。



要解决你应该总是删除循环内索引0处的行。

你可以继续作为

  Dim  p 作为 整数 =  0  
 对于 p =  0  至  49  
 datagridview1.Rows.RemoveAt（ 0 ）
 下一步 

My Code is

Dim p As Integer = 0
For p = 0 To 49
datagridview1.Rows.RemoveAt(p)
Next


if i run this code it remove only odd number rows but i want to remove row wise data



Please help.

解决方案

I think you have a error on logic.
that is

datagridview1.Rows.RemoveAt(p)

delete the row of index p .after deleting the row whole index of grid is refreshed.
suppose you have

index 0 = row 1
index 1= row 2
index 2=row 3
-----------------
----------------- and so on

In your loop (when p=0 )
row1 (with index 0) is deleted index is refresed.
i.e. grid become as

index 0 = row 2
index 1= row 3
-----------------
-----------------

on 2nd loop(when p=1)
row 3 is deleted. with current index(1) ... so your loop deletes only odd rows.

To solve u should always remove row at index 0 inside loop.
you can proceed as

Dim p As Integer = 0
For p = 0 To 49
datagridview1.Rows.RemoveAt(0)
Next

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