Original: Visual Studio 2015 creates a solution for the Android project hint "Value cannot be null" in C #When you choose C # > Android to create a blank app, you are prompted with the following error:null. Parameter name:path1Since the Android SDK was previously installed on this machine, it was skipped when installing Visual Studio 2015 and did not specify a corresponding path for Xamarin. Visual Studio t
Original address: http://blog.csdn.net/kevinzhangfei/article/details/6995316The "null value is assigned to a property of primitive type setter of" error was reported during the action request data, and was discovered after the search because the corresponding field in the database was Null.For example:Java code"printtime" type="Long" >"Print_time"/> [Java]View pl
. Otherwise, a financial statement was calculated in error. The consequences are very serious! Copyright Notice: 1) original works, from the "Clevercode blog", please do not reprint, otherwise hold the copyright legal responsibility.2) Original address: http://blog.csdn.net/clevercode/article/details/47035975.3) category address (MySQL database summary): http://blog.csdn.net/clevercode/article/category/3262205 (blog continued to add, concern please
When you create a project, if you have a date field, you can enter a date field without entering a value. If you directly convert datetime to null, an error occurs. The following error message is displayed:
Cannot convert null to "system. datetime" because it is a
Problem Description: Null value is assigned to a property of primitive type setter, hibernate int data cannot read hiberante read int integer data error hiberante read Database error
Error log:
Exception in thread "main" Org.hibernate.PropertyAccessException:Null
I do not know if you have encountered such a situation?
The string ' null ', rather than NULL, is returned when the value of the Drop-down list DDL is fetched in jquery, resulting in incorrect parameters being fetched;
Even though it was not empty in the background, it caused an error (such as putting the
This article mainly introduces the solution for php to read the ntext Field returned value of mssql as null. it can be solved by modifying the field type or using the adodb component, which has some reference value, for more information about how to read the ntext field of mssql in php, see the example in this article. Share it with you for your reference. The sp
This article mainly introduces the solution for php to read the ntext Field returned value of mssql as null. it can be solved by modifying the field type or using the adodb component, which has some reference value, for more information about how to read the ntext field of mssql in php, see the example in this article. Share it with you for your reference. The sp
the blank area to close the soft keyboard */3 ll_login.setOnClickListener (new OnClickListener () {4 @ Override 5 public void onClick (View v) {6 switch (v. getId () {7 case R. id. ll_activity_login: 8 InputMethodManager imm2 = (InputMethodManager) 9 getSystemService (Context. INPUT_METHOD_SERVICE); 10 imm2.hideSoftInputFromWindow (v. getWindowToken (), 0); 11 break; 12} 13 14} 15 });
I thought it was a success, but I found that the keyboard cannot be closed after clicking it!
Check again. The
DataGridView the value of the checkbox column after paging is nullstring b = describ_datagridview.rows[i]. cells[0]. Value.tostring ();//No error, but no valueWorkaround:1.string b = describ_datagridview.rows[i]. cells[0]. Editedformattedvalue.tostring ();//editedformattedvalue gets the current formatted value of the cell, regardless of whether the cell is in edi
Write an android dialog box, click the button to get edittext inside the value, here has been reported null pointer exception, studied for a long time finally solved.Exceptions are as follows:My original code:The update dialog box private void Updatedialog (final String id) {tablelayout updatemsg = (tablelayout) getlayoutinflater (). Inflate ( R.layout.updatemsg, NULL
When a general LINQ reads a null value field, it is inexplicable that nothing is displayed, but you cannot see the error, and by analyzing, provide the following methods for reference:
1, sure to check the data table shows whether there is a null value, as long as there is
This article mainly introduces the solution for php to read the ntext field returned value of mssql as null. It can be solved by modifying the field type or using the adodb component, which has some reference value, for more information, see
This article mainly introduces the solution for php to read the ntext field returned
valid value.
In fact, for aggregate functions, the IsNull function is useful if null values can lead to error results. Remember that when you use an asterisk, the Count function calculates all the rows. The following example shows the effect of NULL values in AVG and Count aggregate functions:
SET NOCOUNT ON GOCR
Error:Microsoft ole db Provider for SQL Server error '80040e2f': The NULL value cannot be inserted into the 'id' column, table 'web. dbo. Dingdan'; The column cannot have NULL values. INSERT failed./Untitled-2.asp, row 115SolutionClick table, modify, and set the id column label to "yes"
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