Solution to illegal input value in excel

Solution to illegal input value in excel: 1. Check whether the entered value meets the requirements, and set a warning or error prompt in Excel through conditional formatting or data verification function to remind the user to re-enter the correct value; 2. Using the data verification function, you can set constraints such as the range, type, and length of values, and Excel will automatically give error prompts; 3. Use the IF function to make conditional judgments, and give corresponding processing methods based on the results of the conditions; 4. Use Conditional formatting is used to mark illegal values ​​​​in different styles.

In Excel, when the entered value is illegal, there are several processing methods:

1. Check the entered value Whether the value meets the requirements: First, make sure the entered value is within a reasonable range. For example, when entering age, you generally won't accept negative numbers or values ​​outside a certain range. If it is found that the entered value is illegal, you can set a warning or error prompt in Excel through conditional formatting or data validation functions to remind the user to re-enter the correct value.

2. Use the data verification function: Excel provides a data verification function that can limit and verify the entered values. Through the data validation function, you can set constraints such as the range, type, and length of values. When the values ​​entered by the user do not meet these conditions, Excel will automatically give an error prompt. You can use the data validation function by following the following steps:

Select the cell or range where you want to enter a value;

In the "Data Tools" group on the "Data" tab, click "Data Validation" ";

In the pop-up data verification dialog box, set constraints, such as allowed value range, input type, length, etc.;

Click "OK" to save the settings.

3. Use the IF function to make conditional judgments: In Excel, you can use the IF function to make conditional judgments on the input values, and provide corresponding processing methods based on the results of the conditions. For example, if the entered value is less than 0, you can use the IF function to determine and give a prompt message, or set the value of the cell to 0. The syntax of the IF function is as follows:

IF(condition, result 1, result 2)

Among them, the condition is the condition to be judged, result 1 is the result when the condition is true, and result 2 is The result when the condition is false.

4. Use conditional formatting to mark: By setting conditional formatting, you can change the cell style according to specific conditions, such as text color, background color, etc. You can set conditional formats based on the legality of the input values ​​so that illegal values ​​are displayed in different styles to facilitate user identification and modification. You can set conditional formatting by following these steps:

Select the cells or ranges where you want to set conditional formatting;

In the "Style" group on the "Home" tab, click "Conditional Formatting" ;

In the pop-up conditional formatting dialog box, select the appropriate conditions and styles as needed;

Click "OK" to save the settings.

Summary

When the value entered in Excel is illegal, you can check whether the entered value meets the requirements, use the data verification function, use the IF function to make conditional judgments, and Use conditional formatting for tagging and other methods to deal with it. These methods can help users promptly discover and correct illegal input values ​​and improve the accuracy and reliability of data.

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