安装Visual Studio 2019后无法使用DataSet编辑器打开数据集 [英] After installing Visual Studio 2019 Cannot Open a Dataset with DataSet Editor
问题描述
Visual Studio的安装成功。除数据集编辑器外,一切正常。我在尝试打开数据集编辑器时收到此消息 - Value不能为null。参数名称:实例。
如何修复?
嗨dhm0145,
欢迎来到MSDN论坛。
>>我在尝试打开数据集编辑器时收到此消息 - Value不能为null。参数名称:实例。
您是否尝试打开以前的项目或新项目并遇到此问题?
根据错误信息,请试试以下其他一些社区成员之前分享:
- 右键单击项目名称并选择"属性",将目标框架版本更改为4.5或4.6 / 4.61以进行尝试。 (之前备份项目)
- 如果您使用了Telerik Reporting组件,请删除并重新添加,有关详细信息,请
查看此文档。
最好的问候,
萨拉跨度>
Installation of Visual Studio was successful. Everything works OK except dataset editor. I get this message when trying to open the dataset editor - Value cannot be null. Parameter name: instance.
How can this be fixed?
Hi dhm0145,
Welcome to the MSDN forum.
>> I get this message when trying to open the dataset editor - Value cannot be null. Parameter name: instance.
Did you try to open a previous project or a new project and meet this issue?
According to the error message, please have a try with the following that some other community members shared before:
- Right click the project name and choose ‘Properties’, change the target Framework version to 4.5 or 4.6/4.61 to have a try. (Back up your project before)
- If you used the Telerik Reporting component, please removed and added again, for more detail information, please check this doc.
Best regards,
Sara
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