protected string GetFixedFieldValue(string name)
{
FixedLengthField field = this.GetFixedField(name);
if (field == null)
{
throw new Exception("未定义定长字段" + name);
}
return(field.Value);
}
// 设置某个定长字段的值
protected void SetFixedFieldValue(string name, string value)
{
FixedLengthField field = this.GetFixedField(name);
if (field == null)
{
throw new Exception("未定义定长字段" + name);
}
field.Value = value;
}
// 将对象转换字符串命令
public virtual string ToText()
{
Debug.Assert(String.IsNullOrEmpty(this.CommandIdentifier) == false, "命令指示符未赋值");
StringBuilder text = new StringBuilder(this.CommandIdentifier);
if (this.FixedLengthFields != null)
{
//foreach (FixedLengthField field in this.FixedLengthFields)
for (int i = 0; i < this.FixedLengthFields.Count; i++)
{
FixedLengthField field = this.FixedLengthFields[i];
if (field.Value == null || field.Value.Length != field.Length)
{
throw new Exception("定长字段[" + field.Name + "]的值为null或者长度不符合定义");
}
text.Append(field.Value);
}
}
if (this.VariableLengthFields != null && this.VariableLengthFields.Count > 0)
{
//foreach (VariableLengthField field in this.VariableLengthFields)
for (int i = 0; i < this.VariableLengthFields.Count; i++)
{
VariableLengthField field = this.VariableLengthFields[i];
if (field.Value != null)
{
text.Append(field.ID + field.Value + SIPConst.FIELD_TERMINATOR);
}
}
}
string result = text.ToString();
// 去掉字符串最后一个|
if (string.IsNullOrEmpty(result) == false)
{
if (result.Substring(result.Length - 1) == SIPConst.FIELD_TERMINATOR)
{
result = result.Substring(0, result.Length - 1);
}
}
return(result);
}