C#如何创建字段？（急急急）

想新建一个shape文件，不知如何创建字段

<P>自己顶一下</P>

<P>俺给你个代码：</P>
<P>Public Function CreateShapefile(sPath As String, sName As String, sSpatial As ISpatialReference) As IFeatureClass  ' 名称不要加.shp后缀  <BR>   Dim pFWS As IFeatureWorkspace<BR>   Dim pWorkspaceFactory As IWorkspaceFactory<BR>   Set pWorkspaceFactory = New ShapefileWorkspaceFactory<BR>   Set pFWS = pWorkspaceFactory.OpenFromFile(sPath, 0)<BR>   <BR>   Dim pFields As IFields<BR>   Dim pFieldsEdit As IFieldsEdit<BR>   Set pFields = New Fields<BR>   Set pFieldsEdit = pFields<BR>   <BR>   Dim pField As iField<BR>   Dim pFieldEdit As IFieldEdit<BR>   <BR>   Set pField = New Field<BR>   Set pFieldEdit = pField<BR>   pFieldEdit.name = "Shape"<BR>   pFieldEdit.Type = esriFieldTypeGeometry<BR>   <BR>   Dim pGeomDef As IGeometryDef<BR>   Dim pGeomDefEdit As IGeometryDefEdit<BR>   Set pGeomDef = New GeometryDef<BR>   Set pGeomDefEdit = pGeomDef</P>
<P>   With pGeomDefEdit</P>
<P>      .GeometryType = esriGeometryPolygon<BR>      Set .SpatialReference = sSpatial ' New UnknownCoordinateSystem</P>
<P>   End With</P>
<P>   Set pFieldEdit.GeometryDef = pGeomDef<BR>   pFieldsEdit.AddField pField<BR>   <BR>   Set pField = New Field<BR>   Set pFieldEdit = pField</P>
<P>   With pFieldEdit</P>
<P>      .length = 30<BR>      .name = "MiscText"<BR>      .Type = esriFieldTypeString</P>
<P>   End With</P>
<P>   pFieldsEdit.AddField pField<BR>   <BR>   Dim pFeatClass As IFeatureClass<BR>   Set pFeatClass = pFWS.CreateFeatureClass(sName, pFields, Nothing, _<BR>      Nothing, esriFTSimple, "Shape", "")<BR>                                            <BR>   Set CreateShapefile = pFeatClass</P>
<P>End Function<BR></P>

<P>可在c#中pFieldEdit pFieldsEdit等提示属性是只读的，不能赋值</P>

<P>IFieldEdit pField=new FieldClass();</P>
<P>           </P>
<P>             <BR>   pField.Name_2 ="hjh";<BR>   pField.Type_2  = esriFieldType.esriFieldTypeString;<BR>   pField.Length_2  = 50;<BR>   pTable.AddField(pField);</P>