Property: BlockLength for FixedWidthBlock

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Updated2024-09-12
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Specifies the number of values that a channel in the FixedWidthBlock contains.

If the number is -1, the block extends to the end of the file.

Object.BlockLength

Object	FixedWidthBlock Object with this property
Object.BlockLength	LongInteger with read and write access

Note If the property SampleWidth is not equal to 1 in a FixedWidthBlock, the BlockLength contains the number of lines in a text file.

The following example reads a group name and the length of a FixedWidthBlock from a text file. Then the example creates this channel group with the property BlockLength and the channel MyChannel. The example skips the lines specified by the BlockLength before reading in the channel values:

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Dim oBlock : Set oBlock = File.GetFixedWidthBlock
Dim GroupName : GroupName = File.GetNextStringValue(eString)
oBlock.BlockLength = File.GetNextStringValue(eI32)
       
Set oChannelGroup = Root.ChannelGroups.Add(GroupName)
Call oChannelGroup.Properties.Add("BlockLength", oBlock.BlockLength)
  
Dim oChannel : Set oChannel = Block.Channels.Add("MyChannel", eI16)
oChannel.Formatter.CharacterCount = 4
oChannel.Formatter.SampleWidth = 4
Call oChannelGroup.Channels.AddDirectAccessChannel(Channel)
              
Call File.SkipLines(oBlock.BlockLength+1)
oBlock.Position = File.Position