Convert UDF that is a Boolean type

Introduction

Boolean type in AutoCount Accounting is a custom type that contains value of "T" or "F", which is also a single letter of string type.
It can also be null when the custom boolean type is not assigned.

Boolean Type in Record or Entity

• Custom boolean type in Record or Entity of a class has been converted to bool type, programmer does not have to do the conversion.
• Example below shows that, programmer can direct access to the bool type in Invoice class without having to convert it from original type (custom boolean type) to a bool type.

string docNo = "I-000001";

BCE.AutoCount.Invoicing.Sales.Invoice.InvoiceCommand cmd = BCE.AutoCount.Invoicing.Sales.Invoice.InvoiceCommand.Create(e.DBSetting);
BCE.AutoCount.Invoicing.Sales.Invoice.Invoice doc = cmd.Edit(docNo);

if (doc == null)
    return;

if (doc.Cancelled)
{
    BCE.Application.AppMessage.ShowMessage($"Document {docNo} is cancelled.");
}

if (doc.Transferable)
{
    BCE.Application.AppMessage.ShowMessage($"Document {docNo} can be transferred to C/N.");
}

UDF of Boolean Type

When an UDF that is boolean type, conversion may be necessary.

• UDF is accessed via an object of UDFRecord class in Record or Entity, the value that it returns is an object.
• The value of a UDF that is bool type has not been converted to bool type.
• In order to apply the value of a boolean type UDF in condition, programmer needs to convert the type to bool type or string type.
• The value of the object is either "T" or "F".
• The value can be null if it has not been initialized. By default, AutoCount Accounting will initialize the value.

Convert UDF Boolean Type to bool Type

string docNo = "I-000001";

BCE.AutoCount.Invoicing.Sales.Invoice.InvoiceCommand cmd = BCE.AutoCount.Invoicing.Sales.Invoice.InvoiceCommand.Create(e.DBSetting);
BCE.AutoCount.Invoicing.Sales.Invoice.Invoice doc = cmd.Edit(docNo);

if (doc == null)
    return;

bool isBool = BCE.Data.Convert.TextToBoolean(e.MasterRecord.UDF["IsBool"]);

if (isBool)
{
    BCE.Application.AppMessage.ShowMessage("UDF_IsBool is true.");
}
else
{
    BCE.Application.AppMessage.ShowMessage("UDF_IsBool is false.");
}

• TextToBoolean can convert "T", "true", true to bool type of true;
• all other value and null are converted to bool type of false.

Assign value to UDF of boolean type

• During assignment of true or false to UDF of boolean type, the value has to be converted to "T" or "F".
• Below example will throw an exception when assign true to UDF["IsBool"].

e.MasterRecord.UDF["IsBool"] = true;

An exception of type 'System.ArgumentException' occurred in System.Data.dll but was not handled in user code Additional information: Cannot set column 'UDF_IsBool'. The value violates the MaxLength limit of this column.

• Convert to "T" or "F" before assign the value to UDF of boolean type.

e.MasterRecord.UDF["IsBool"] = BCE.Data.Convert.BooleanToText(true);

• The value of e.MasterRecord.UDF["IsBool"] is "T"

e.MasterRecord.UDF["IsBool"] = BCE.Data.Convert.BooleanToText(false);

• The value of e.MasterRecord.UDF["IsBool"] is "F"

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