DbParameter.cs

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using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
 
namespace System.Data.Common;
 
public abstract class DbParameter : MarshalByRefObject, IDbDataParameter, IDataParameter
{
    [Browsable(false)]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
    [RefreshProperties(RefreshProperties.All)]
    public abstract DbType DbType { get; set; }
 
    [DefaultValue(ParameterDirection.Input)]
    [RefreshProperties(RefreshProperties.All)]
    public abstract ParameterDirection Direction { get; set; }
 
    [Browsable(false)]
    [DesignOnly(true)]
    [EditorBrowsable(EditorBrowsableState.Never)]
    public abstract bool IsNullable { get; set; }
 
    [DefaultValue("")]
    public abstract string ParameterName
    {
        get; [param: AllowNull]
        set;
    }
 
    byte IDbDataParameter.Precision
    {
        get
        {
            return 0;
        }
        set
        {
        }
    }
 
    byte IDbDataParameter.Scale
    {
        get
        {
            return 0;
        }
        set
        {
        }
    }
 
    public virtual byte Precision
    {
        get
        {
            return ((IDbDataParameter)this).Precision;
        }
        set
        {
            ((IDbDataParameter)this).Precision = value;
        }
    }
 
    public virtual byte Scale
    {
        get
        {
            return ((IDbDataParameter)this).Scale;
        }
        set
        {
            ((IDbDataParameter)this).Scale = value;
        }
    }
 
    public abstract int Size { get; set; }
 
    [DefaultValue("")]
    public abstract string SourceColumn
    {
        get; [param: AllowNull]
        set;
    }
 
    [DefaultValue(false)]
    [EditorBrowsable(EditorBrowsableState.Advanced)]
    [RefreshProperties(RefreshProperties.All)]
    public abstract bool SourceColumnNullMapping { get; set; }
 
    [DefaultValue(DataRowVersion.Current)]
    public virtual DataRowVersion SourceVersion
    {
        get
        {
            return DataRowVersion.Default;
        }
        set
        {
        }
    }
 
    [DefaultValue(null)]
    [RefreshProperties(RefreshProperties.All)]
    public abstract object? Value { get; set; }
 
    [EditorBrowsable(EditorBrowsableState.Advanced)]
    public abstract void ResetDbType();
}