fix #1498

OpenXmlFormats/Drawing/BaseTypes.cs

@@ -270,11 +270,7 @@ namespace NPOI.OpenXmlFormats.Dml
 
         internal void Write(StreamWriter sw, string nodeName)
         {
-            if (name == null)
-                sw.Write(string.Format("<a:{0}", nodeName));
-            else
-                sw.Write(string.Format("<{0}", name));
-
+            sw.Write(string.Format("<{0}", nodeName));
             XmlHelper.WriteAttribute(sw, "x", this.x, true);
             XmlHelper.WriteAttribute(sw, "y", this.y, true);
             sw.Write("/>");
@@ -2353,11 +2349,11 @@ namespace NPOI.OpenXmlFormats.Dml
             XmlHelper.WriteAttribute(sw, "flipV", this.flipV,false);
             sw.Write(">");
             if (this.off != null)
-                this.off.Write(sw, "off");
+                this.off.Write(sw, "a:off");
             if (this.ext != null)
                 this.ext.Write(sw, "a:ext");
             if (this.chOff != null)
-                this.chOff.Write(sw, "chOff");
+                this.chOff.Write(sw, "a:chOff");
             if (this.chExt != null)
                 this.chExt.Write(sw, "a:chExt");
             sw.Write(string.Format("</a:{0}>", nodeName));

OpenXmlFormats/Drawing/SpreadsheetDrawing.cs

@@ -1703,7 +1703,7 @@ namespace NPOI.OpenXmlFormats.Dml.Spreadsheet
         {
             sw.Write("<xdr:absCellAnchor>");
             if (this.pos!=null)
-                this.pos.Write(sw, "pos");
+                this.pos.Write(sw, "p:pos");
             if (this.sp != null)
                 sp.Write(sw, "sp");
             else if (this.connector != null)

OpenXmlFormats/Drawing/WordprocessingDrawing.cs

@@ -1281,7 +1281,7 @@ namespace NPOI.OpenXmlFormats.Dml.WordProcessing
             XmlHelper.WriteAttribute(sw, "wp14:editId", this.editIdField);
             sw.Write(">");
             if (this.simplePos != null)
-                this.simplePos.Write(sw, "simplePos");
+                this.simplePos.Write(sw, "wp:simplePos");
             if (this.positionH != null)
                 this.positionH.Write(sw, "positionH");
             if (this.positionV != null)