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50 lines
No EOL
2.2 KiB
C#
50 lines
No EOL
2.2 KiB
C#
#region " © Copyright 2005-07 to Marcos Meli - http://www.marcosmeli.com.ar"
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// Errors, suggestions, contributions, send a mail to: marcos@filehelpers.com.
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#endregion
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using System;
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namespace FileHelpers
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{
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/// <summary>Indicates the value to assign to the field in the case of find a "NULL".</summary>
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/// <remarks>See the <a href="attributes.html">Complete Attributes List</a> for more clear info and examples of each one.</remarks>
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/// <seealso href="attributes.html">Attributes List</seealso>
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/// <seealso href="quick_start.html">Quick Start Guide</seealso>
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/// <seealso href="examples.html">Examples of Use</seealso>
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[AttributeUsage(AttributeTargets.Field)]
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public sealed class FieldNullValueAttribute : Attribute
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{
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internal object NullValue;
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// internal bool NullValueOnWrite = false;
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/// <summary>Indicates directly the null value.</summary>
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/// <param name="nullValue">The value to assign in the "NULL" case.</param>
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public FieldNullValueAttribute(object nullValue)
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{
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NullValue = nullValue;
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// NullValueOnWrite = useOnWrite;
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}
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// /// <summary>Indicates directly the null value.</summary>
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// /// <param name="nullValue">The value to assign in the "NULL" case.</param>
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// public FieldNullValueAttribute(object nullValue): this(nullValue, false)
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// {}
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// /// <summary>Indicates a type and a string to be converted to that type.</summary>
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// /// <param name="type">The type of the null value.</param>
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// /// <param name="nullValue">The string to be converted to the specified type.</param>
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// /// <param name="useOnWrite">Indicates that if the field has that value when the library writes, then the engine use an empty string.</param>
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// public FieldNullValueAttribute(Type type, string nullValue, bool useOnWrite):this(Convert.ChangeType(nullValue, type, null), useOnWrite)
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// {}
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/// <summary>Indicates a type and a string to be converted to that type.</summary>
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/// <param name="type">The type of the null value.</param>
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/// <param name="nullValue">The string to be converted to the specified type.</param>
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public FieldNullValueAttribute(Type type, string nullValue):this(Convert.ChangeType(nullValue, type, null))
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{}
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}
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} |