private void UpdateButton_Click(object sender, EventArgs e)
{
int selectedCapability = (int)CapabilitiesComboBox.Items[CapabilitiesComboBox.SelectedIndex];
CapabilityContainer capContainer = twainDevice.GetCapability(selectedCapability);
UpdateCapability(capContainer);
}
private void CapabilitiesComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
ResetCapabilitiesUI();
int selectedCapability = (int)CapabilitiesComboBox.Items[CapabilitiesComboBox.SelectedIndex];
CapabilityContainer capContainer = twainDevice.GetCapability(selectedCapability);
ExtractCapabilityFromContainer(capContainer, ValueTextBox, ValueLabel);
}
private void UpdateCapability(CapabilityContainer capContainer)
{
try
{
if (capContainer is CapabilityContainerOneValueFloat)
{
CapabilityContainerOneValueFloat capContainerFloat = capContainer as CapabilityContainerOneValueFloat;
float newFloatValue;
if (float.TryParse(ValueTextBox.Text, out newFloatValue))
{
capContainerFloat.Value = newFloatValue;
}
}
else if (capContainer is CapabilityContainerOneValueString)
{
CapabilityContainerOneValueString capContainerString = capContainer as CapabilityContainerOneValueString;
capContainerString.Value = ValueTextBox.Text;
}
else if (capContainer is CapabilityContainerEnum)
{
CapabilityContainerEnum capContainerEnum = capContainer as CapabilityContainerEnum;
CapabilityContainerOneValue capCurrentValue = capContainerEnum.CurrentValue;
if (capCurrentValue is CapabilityContainerOneValueFloat)
{
CapabilityContainerOneValueFloat capCurrentValueFloat = capCurrentValue as CapabilityContainerOneValueFloat;
float newFloatValue;
if (float.TryParse(CurrentValueTextBox.Text, out newFloatValue))
{
capCurrentValueFloat.Value = newFloatValue;
}
}
else if (capCurrentValue is CapabilityContainerOneValueString)
{
CapabilityContainerOneValueString capCurrentValueString = capCurrentValue as CapabilityContainerOneValueString;
capCurrentValueString.Value = CurrentValueTextBox.Text;
}
}
else if (capContainer is CapabilityContainerRange)
{
CapabilityContainerRange capContainerRange = capContainer as CapabilityContainerRange;
float newMaximumValue;
if (float.TryParse(MaximumTextBox.Text, out newMaximumValue))
{
capContainerRange.Maximum = newMaximumValue;
}
float newMinimumValue;
if (float.TryParse(MinimumTextBox.Text, out newMinimumValue))
{
capContainerRange.Minimum = newMinimumValue;
}
float newValue;
if (float.TryParse(ValueTextBox.Text, out newValue))
{
capContainerRange.Value = newValue;
}
float newStepValue;
if (float.TryParse(StepTextBox.Text, out newStepValue))
{
capContainerRange.Step = newStepValue;
}
}
twainDevice.SetCapability(capContainer);
}
catch (TwainException ex)
{
MessageBox.Show(String.Format(Constants.twainErrorString, (int)ex.ConditionCode, ex.ConditionDescription), "Error setting capabilities.", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void ExtractCapabilityFromContainer(CapabilityContainer capContainer, TextBox textBox, Label label)
{
if (capContainer is CapabilityContainerOneValueFloat)
{
CapabilityContainerOneValueFloat capContainerFloat = capContainer as CapabilityContainerOneValueFloat;
if (textBox != null)
{
textBox.Text = capContainerFloat.Value.ToString();
textBox.Visible = label.Visible = true;
}
else
{
ValuesListBox.Items.Add(capContainerFloat.Value);
ValuesListBox.Visible = ValuesLabel.Visible = true;
}
}
else if (capContainer is CapabilityContainerOneValueString)
{
CapabilityContainerOneValueString capContainerString = capContainer as CapabilityContainerOneValueString;
if (textBox != null)
{
textBox.Text = capContainerString.Value;
textBox.Visible = label.Visible = true;
}
else
{
ValuesListBox.Items.Add(capContainerString.Value);
ValuesListBox.Visible = ValuesLabel.Visible = true;
}
}
else if (capContainer is CapabilityContainerEnum)
{
CapabilityContainerEnum capContainerEnum = capContainer as CapabilityContainerEnum;
CapabilityContainerOneValue capCurrentValue = capContainerEnum.CurrentValue;
CapabilityContainerOneValue capDefaultValue = capContainerEnum.DefaultValue;
CapabilityContainerOneValueCollection capValues = capContainerEnum.Values;
ExtractCapabilityFromContainer(capCurrentValue, CurrentValueTextBox, CurrentValueLabel);
ExtractCapabilityFromContainer(capDefaultValue, DefaultValueTextBox, DefaultValueLabel);
foreach (CapabilityContainerOneValue capValue in capValues)
{
ExtractCapabilityFromContainer(capValue, null, null);
}
}
else if (capContainer is CapabilityContainerArray)
{
CapabilityContainerArray capContainerArray = capContainer as CapabilityContainerArray;
CapabilityContainerOneValueCollection capValues = capContainerArray.Values;
foreach (CapabilityContainerOneValue capValue in capValues)
{
ExtractCapabilityFromContainer(capValue, null, null);
}
UpdateButton.Enabled = false;
}
else if (capContainer is CapabilityContainerRange)
{
CapabilityContainerRange capContainerRange = capContainer as CapabilityContainerRange;
DefaultValueTextBox.Text = capContainerRange.Default.ToString();
ValueTextBox.Text = capContainerRange.Value.ToString();
MaximumTextBox.Text = capContainerRange.Maximum.ToString();
MinimumTextBox.Text = capContainerRange.Minimum.ToString();
StepTextBox.Text = capContainerRange.Step.ToString();
DefaultValueTextBox.Visible = DefaultValueLabel.Visible = ValueTextBox.Visible = ValueLabel.Visible
= MaximumTextBox.Visible = MaximumLabel.Visible = MinimumTextBox.Visible = MinimumLabel.Visible
= StepTextBox.Visible = StepLabel.Visible = true;
}
}
