在导入数据到sde之前判断sde是否安装，以及sde许可是否可用

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 1 IAoInitialize --- ESRI.ArcGIS.esriSystem.IAoInitialize
 2 
 3 private void pd（）
 4 
 5 {
 6 
 7  IAoInitialize m_AoInitialize = new AoInitializeClass();
 8             if (m_AoInitialize == null)
 9             {
10                 System.Windows.Forms.MessageBox.Show("没有安装ArcEngine,系统无法运行!");
11                 return false;
12             }
13             esriLicenseStatus licenseStatus = (esriLicenseStatus)m_AoInitialize.IsProductCodeAvailable(esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB);
14             if (licenseStatus == esriLicenseStatus.esriLicenseAvailable)
15             {
16                 licenseStatus = (esriLicenseStatus)m_AoInitialize.Initialize(esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB);
17                 if (licenseStatus != esriLicenseStatus.esriLicenseCheckedOut)
18                 {
19                     System.Windows.Forms.MessageBox.Show("缺少GDB许可，请重新安装ArcEngine!");
20                     return false;
21                 }
22             }
23             else
24             {
25                 System.Windows.Forms.MessageBox.Show("缺少GDB许可，请重新安装ArcEngine!");
26                 return false;
27             }
28 
29 }

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