Read the contents of a binary file and write to a Blob field in a new row of a table.
[C#]
/// <summary>
/// Read the contents of a binary file and write to a Blob field in a new row of a table.
/// </summary>
/// <param name="string_Filename">A System.String that is the name of a binary file to read. Example: "C:\temp\myPicture.bmp"</param>
/// <param name="table">An ITable interface that is the table is to have a new row added and have a specified BLOB field populated.</param>
/// <param name="int32_BlobFieldIndex">A System.Int32 that is the index number of the Blob field in the Fields collection of the Table. Example: 3</param>
/// <returns>True = successful. False = unscucceeful.</returns>
/// <remarks></remarks>
public System.Boolean WriteBlobFileContentsToTableRowField(System.String string_Filename, ESRI.ArcGIS.Geodatabase.ITable table, System.Int32 int32_BlobFieldIndex)
{
try
{
//Read the Blob (binary) stream from a file.
ESRI.ArcGIS.esriSystem.IMemoryBlobStream memoryBlobStream = new ESRI.ArcGIS.esriSystem.MemoryBlobStreamClass();
memoryBlobStream.LoadFromFile(string_Filename);
//Add a new row to the table
ESRI.ArcGIS.Geodatabase.IRow row = table.CreateRow();
//Get the Blob Field from the Table.
ESRI.ArcGIS.Geodatabase.IFields fields = row.Fields;
ESRI.ArcGIS.Geodatabase.IField field = fields.get_Field(int32_BlobFieldIndex);
//Test to ensure the index number specified is a Blob Field
if (field.Type == ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeBlob)
{
//Write the Blob (binary) stream to the Blob Field and save
row.set_Value(int32_BlobFieldIndex, (System.Object)memoryBlobStream);
//row.get_Value(int32_BlobFieldIndex) = memoryBlobStream;
row.Store();
//success
return true;
}
else
{
//unsuccessful
return false;
}
}
catch (System.Exception ex)
{
//unsuccessful with error, interrogate more
return false;
}
}
[Visual Basic .NET]
''' <summary>
''' Read the contents of a binary file and write to a Blob field in a new row of a table.
''' </summary>
''' <param name="string_Filename">A System.String that is the name of a binary file to read. Example: "C:\temp\myPicture.bmp"</param>
''' <param name="table">An ITable interface that is the table is to have a new row added and have a specified BLOB field populated.</param>
''' <param name="int32_BlobFieldIndex">A System.Int32 that is the index number of the Blob field in the Fields collection of the Table. Example: 3</param>
''' <returns>True = successful. False = unscucceeful.</returns>
''' <remarks></remarks>
Public Function WriteBlobFileContentsToTableRowField(ByVal string_Filename As System.String, ByVal table As ESRI.ArcGIS.Geodatabase.ITable, ByVal int32_BlobFieldIndex As System.Int32) As System.Boolean
Try
'Read the Blob (binary) stream from a file.
Dim memoryBlobStream As ESRI.ArcGIS.esriSystem.IMemoryBlobStream = New ESRI.ArcGIS.esriSystem.MemoryBlobStreamClass
memoryBlobStream.LoadFromFile(string_Filename)
'Add a new row to the table
Dim row As ESRI.ArcGIS.Geodatabase.IRow = table.CreateRow
'Get the Blob Field from the Table.
Dim fields As ESRI.ArcGIS.Geodatabase.IFields = row.Fields
Dim field As ESRI.ArcGIS.Geodatabase.IField = fields.Field(int32_BlobFieldIndex)
'Test to ensure the index number specified is a Blob Field
If field.Type = ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeBlob Then
'Write the Blob (binary) stream to the Blob Field and save
row.Value(int32_BlobFieldIndex) = CType(memoryBlobStream, System.Object) ' Explicit Cast
row.Store()
'success
Return True
Else
'unsuccessful
Return False
End If
Catch ex As System.Exception
'unsuccessful with error, interrogate more
Return False
End Try
End Function