未将对象引用到对象的实例

Question

或者App.Config文件中没有appSettings这一节？

Answer 1

不会吧，我的App文件就在那个路径下啊

Answer 2

xml文件内容是什么,还有错误信息到底是什么
什么都不说我怎么知道你怎么了

Answer 3

xmlDoc.SelectSingleNode("appSettings")  这个结果是null  后面不能在获取值 ，检查下了

Answer 4

未将对象引用到实例,就是某个变量为NULL了
你到底是SelectSingleNode("appSettings")为NULL
还是.ChildNodes为NULL啊

Answer 5

我把App文件贴出来给你看下：
<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="ConStringEncrypt" value="false"/>
    <!--<add key="ConnectionString" value="server=192.168.0.123;database=jijiaOAICE;uid=sa;pwd=sa;pooling=false " />-->
    <add key="ConnectionString" value=""/>
    <add key="AppName" value="OA"/>
  </appSettings>
  <system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="AuthorityServiceSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
          <security mode="None">
            <transport clientCredentialType="None" proxyCredentialType="None" realm=""/>
            <message clientCredentialType="UserName" algorithmSuite="Default"/>
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>  </system.serviceModel>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
  </startup>
</configuration>

Answer 6

不会吧，我的App文件就在那个路径下啊我把App文件贴出来给你看下：<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="ConStringEncrypt" value="false"/>
    <!--<add key="ConnectionString" value="server=192.168.0.123;database=jijiaOAICE;uid=sa;pwd=sa;pooling=false " />-->
    <add key="ConnectionString" value=""/>
    <add key="AppName" value="OA"/>
  </appSettings>
  <system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="AuthorityServiceSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
          <security mode="None">
            <transport clientCredentialType="None" proxyCredentialType="None" realm=""/>
            <message clientCredentialType="UserName" algorithmSuite="Default"/>
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>  </system.serviceModel>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
  </startup>
</configuration>

Answer 7

我把App文件贴出来给你看下：<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="ConStringEncrypt" value="false"/>
    <!--<add key="ConnectionString" value="server=192.168.0.123;database=jijiaOAICE;uid=sa;pwd=sa;pooling=false " />-->
    <add key="ConnectionString" value=""/>
    <add key="AppName" value="OA"/>
  </appSettings>
  <system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="AuthorityServiceSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
          <security mode="None">
            <transport clientCredentialType="None" proxyCredentialType="None" realm=""/>
            <message clientCredentialType="UserName" algorithmSuite="Default"/>
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>  </system.serviceModel>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
  </startup>
</configuration>