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POWhy im getting exception index was out of range inside the scroll bar event?
 

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  1. POWhy im getting exception index was out of range inside the scroll bar event?
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    <p>I have t his code in the scroll bar event:</p> <pre><code>if (_fi.Length &gt; 0) { myTrackPanelss1.trackBar1.Minimum = 0; myTrackPanelss1.trackBar1.Maximum = _fi.Length - 1; tt = list_of_histograms[myTrackPanelss1.trackBar1.Value]; HistogramGraphs1.DrawHistogram(tt); long res = GetTopLumAmount(tt, 1000); long max = GetHistogramMaximum(tt); GetHistogramAverage(tt); setpicture(myTrackPanelss1.trackBar1.Value); this.pictureBox1.Refresh(); } </code></pre> <p>With the following variables defined:</p> <pre><code>_fi = FileInfo[] tt = long[] list_of_histograms = List&lt;long[]&gt; </code></pre> <p>When i move the bar to the end to the right it's getting to frame 1047 and then throw the exception. When the exception is thrown i see that :</p> <p><code>_fi.Length = 1049</code> (-1 so its 1048) so if its starting from 0 its like 0 to 1047)</p> <pre><code>list_of_histograms.Count = 1048 myTrackPanelss1.trackBar1.Value = 1048 </code></pre> <p>I know what the exception means the question is why it happend if i,m doing <code>_fi.Length - 1</code> as length ?</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USNo Idea For Name
    1. USHaim Kashi
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. VO
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      1. POWhy im getting exception index was out of range inside the scroll bar event?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POWhy im getting exception index was out of range inside the scroll bar event?
      1. This table or related slice is empty.
      1. VTDownMod
    1. COWhy is `_fi.Length` relevant when you're not accessing `_fi` but `list_of_histograms`?
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      1. POWhy im getting exception index was out of range inside the scroll bar event?
      1. USDamien_The_Unbeliever
    2. COWhich line does the exception originate from? What is `list_of_histograms`?
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      1. POWhy im getting exception index was out of range inside the scroll bar event?
      1. USJeffRSon
    3. COsetting `myTrackPanelss1.trackBar1.Maximum = _fi.Length - 2;` will fix your problem.
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      1. POWhy im getting exception index was out of range inside the scroll bar event?
      1. USKing King
 

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