/// <summary>
/// Checks if the product identified by the given <paramref name="productGUID"/> contains the property
/// identified by <paramref name="propertyName"/>.
/// </summary>
/// <param name="productGUID">Product GUID</param>
/// <param name="propertyName">Property name</param>
/// <returns>True, if the Product contains this property, otherwise - false.</returns>
public static bool ContainsProperty(Guid productGUID, string propertyName)
{
int len = 0;
MsiExitCodes result = MsiInterop.MsiGetProductInfo(productGUID.ToString(), propertyName, null, ref len);
return(result == MsiExitCodes.Success);
}
/// <summary>
/// Tries to get a product indicated by GUID.
/// </summary>
/// <param name="productGUID">Product GUID</param>
/// <param name="propertyName">Property name</param>
/// <param name="propertyValue">Property value or if not available - <c>null</c>.</param>
/// <returns>MSI exit code</returns>
public static MsiExitCodes TryGetProperty(Guid productGUID, string propertyName, out string propertyValue)
{
int len = 0;
string productGuildStr = FormatGUID(productGUID);
// Get the data len
MsiExitCodes returnValue = MsiInterop.MsiGetProductInfo(productGuildStr, propertyName, null, ref len);
if (returnValue != MsiExitCodes.Success)
{
propertyValue = null;
return(returnValue);
}
// increase for the terminating \0
len++;
propertyValue = new string(new char[len]);
returnValue = MsiInterop.MsiGetProductInfo(productGuildStr, propertyName, propertyValue, ref len);
if (returnValue != MsiExitCodes.Success)
{
propertyValue = null;
return(returnValue);
}
// trim trailing \0
propertyValue = propertyValue.TrimEnd('\0');
return(MsiExitCodes.Success);
}
/// <summary>
/// Get property of a product indicated by GUID. Throws exception if cannot read the property.
/// </summary>
/// <param name="productGUID">Product GUID</param>
/// <param name="propertyName">Property name</param>
/// <returns>Property value, if available.</returns>
/// <exception cref="MSIException">Throws MSIException if reading property was not successful</exception>
public static String GetProperty(Guid productGUID, string propertyName)
{
String propertyValue;
MsiExitCodes returnValue = TryGetProperty(productGUID, propertyName, out propertyValue);
if (returnValue != MsiExitCodes.Success)
{
throw new MSIException(returnValue);
}
return(propertyValue);
}
/// <summary>
/// Enumerate all installed product GUIDs
/// </summary>
/// <returns>An enumerator that returns all installed products GUIDs</returns>
public static IEnumerable <Guid> EnumerateGUIDs()
{
MsiExitCodes ret = 0;
uint i = 0, dummy2 = 0;
do
{
string guid = new string(new char[39]);
object dummy1;
ret = MsiInterop.MsiEnumProductsEx(null, null, InstallContext.All, i, guid, out dummy1, null, ref dummy2);
if (ret == MsiExitCodes.Success)
{
if (Guid.TryParse(guid.TrimEnd('\0'), out var result))
{
yield return(result);
}
}
i++;
} while (ret != MsiExitCodes.NoMoreItems);
yield break;
}
public MSIException(MsiExitCodes returnValue) : base("MSIError : " + returnValue.ToString())
{
this.returnValue = returnValue;
}
