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How to implement ISpatialReferenceDialog in C#  

2013-07-16 20:11:59|  分类: ArcEngine |  标签: |举报 |字号 订阅

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Here is an example of an event handler in a Windows form that pops up a SpatialReferenceDialog allowing the user to select a different coordinate reference system than the one used to initialize the SpatialReferenceDialog. You do not need ArcMap to be the host application of the form, but you still must AOInitialize ArcObjects with your license.
private void btnPickSpatialReference_Click(object sender, EventArgs e)
        {
            string StatusMsg = "";
            bool Status = true;
            SpatialReferenceDialog oSpatialReferenceDialog = null;
            ISpatialReference oSpatialReference = null;
            ISpatialReferenceFactory2 oSpatialReferenceFactory2 = null;
            IGeographicCoordinateSystem oGCS = null;

            try
            {
                oSpatialReferenceFactory2 = (SpatialReferenceEnvironmentClass)new SpatialReferenceEnvironmentClass();
                oGCS = oSpatialReferenceFactory2.CreateGeographicCoordinateSystem(esriSRGeoCSType.esriSRGeoCS_WGS1984.GetHashCode());
                oSpatialReferenceDialog = new SpatialReferenceDialogClass();
                oSpatialReference = oSpatialReferenceDialog.DoModalEdit(oGCS, false, false, false, false, true, this.Handle.ToInt32());

                StatusMsg = oSpatialReference.Name;
            }
            catch (COMException CE)
            {
                StatusMsg = CE.ErrorCode.ToString() + ": " + CE.Message;
                Status = false;
            }
            catch (Exception E)
            {
                StatusMsg = E.ToString();
                Status = false;
            }
            finally
            {
            }
        }
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