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Fix sample not using correct scanner.

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This commit is contained in:
Eugene Wang
2021-04-28 07:44:34 -04:00
parent 4d17226711
commit 68342ec607
1 changed files with 63 additions and 55 deletions
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20
samples/Net5Console/Program.cs
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@@ -32,7 +32,7 @@ namespace Net5Console
{ {
Console.WriteLine($"Transfer ready, count={e.PendingCount}."); Console.WriteLine($"Transfer ready, count={e.PendingCount}.");
}; };
session.SourceDisabled += (sender,e)=> session.SourceDisabled += (sender, e) =>
{ {
Console.WriteLine("Disabled device."); Console.WriteLine("Disabled device.");
Console.WriteLine(); Console.WriteLine();
@@ -49,18 +49,24 @@ namespace Net5Console
Console.WriteLine(); Console.WriteLine();
Console.WriteLine("All devices:"); Console.WriteLine("All devices:");
TW_IDENTITY dsToUse = default; TW_IDENTITY? dsToUse = null;
foreach (var dev in session.GetDataSources()) foreach (var dev in session.GetDataSources())
{ {
Console.WriteLine($"\t{dev}"); Console.WriteLine($"\t{dev}");
if (dev.ProductName == "TWAIN2 FreeImage Software Scanner") if (dev.ProductName == "TWAIN2 Software Scanner")
{ {
dsToUse = dev; dsToUse = dev;
} }
} }
Console.WriteLine(); Console.WriteLine();
session.CurrentDataSource = dsToUse; if (!dsToUse.HasValue)
{
Console.WriteLine("Sample scanner not found.");
}
else
{
session.CurrentDataSource = dsToUse.Value;
if (session.CurrentDataSource.HasValue) if (session.CurrentDataSource.HasValue)
{ {
Console.WriteLine("Current device after opening attempt:"); Console.WriteLine("Current device after opening attempt:");
@@ -75,10 +81,11 @@ namespace Net5Console
} }
Console.WriteLine(); Console.WriteLine();
var sts = caps.CAP_XFERCOUNT.SetOrConstraint(MSG.SET, 2); short count = 3;
var sts = caps.CAP_XFERCOUNT.SetOrConstraint(MSG.SET, count);
if (sts == STS.SUCCESS) if (sts == STS.SUCCESS)
{ {
Console.WriteLine("Successfully set xfercount to 2."); Console.WriteLine($"Successfully set xfercount to {count}.");
} }
else else
{ {
@@ -118,6 +125,7 @@ namespace Net5Console
Console.WriteLine(); Console.WriteLine();
} }
} }
}
else else
{ {
Console.Error.WriteLine("Failed to open DSM"); Console.Error.WriteLine("Failed to open DSM");