我正在使用 ASP.NET 图表显示 SQL 存储过程的结果，并且我将最后存储的proc列用作colorID来显示我使用哪种颜色希望图表中的每一列都是。存储的过程有6列和6行，如下所示（我在下面使用示例数字）。 colorID范围为0,1,2。
问题在于，图表列的颜色不会动态更改为存储的proc中显示的记录。下面的代码只是获取最后一个记录import React, { Component } from 'react';
import { withStyles } from '@material-ui/core/styles';
import styles from "./styles";
import MenuItem from '@material-ui/core/MenuItem';
import Select from 'react-select';
import 'react-select/dist/react-select.css';
import Typography from '@material-ui/core/Typography';
import ArrowDropDownIcon from '@material-ui/icons/ArrowDropDown';
import ArrowDropUpIcon from '@material-ui/icons/ArrowDropUp';
import Input from '@material-ui/core/Input';
import LinearProgress from '@material-ui/core/LinearProgress';
import classNames from 'classnames';
class Option extends React.Component {
handleClick = event => {
this.props.onSelect(this.props.option, event);
};
render() {
const { children, isFocused, isSelected, onFocus } = this.props;
return (
<MenuItem
onFocus={onFocus}
selected={isFocused}
disabled={isSelected}
onClick={this.handleClick}
component="div"
style={{
fontWeight: isSelected ? 500 : 400,
}}
>
{children}
{children === 'LOADING...' &&
<LinearProgress style={{ position: 'absolute',width: '100%',bottom: '0',left: '0',height: '2px', }} />
}
</MenuItem>
);
}
}
class SelectWrapped extends Component {
render() {
const { classes, ...other } = this.props;
return (
<Select
optionComponent={Option}
noResultsText={<Typography>{'No results found'}</Typography>}
clearRenderer={() => {}}
arrowRenderer={arrowProps => {
return arrowProps.isOpen ? <ArrowDropUpIcon /> : <ArrowDropDownIcon />;
}}
valueComponent={valueProps => {
const { children } = valueProps;
console.log(children)
return <div className="Select-value">{children}</div>;
}}
{...other}
/>
);
}
}
class SelectCreatable extends Component {
render() {
const { classes, ...other } = this.props;
console.log(this.props)
return (
<Select.Creatable
optionComponent={Option}
noResultsText={<Typography>{'No results found'}</Typography>}
clearRenderer={() => {}}
arrowRenderer={arrowProps => {
return arrowProps.isOpen ? <ArrowDropUpIcon /> : <ArrowDropDownIcon />;
}}
valueComponent={valueProps => {
const { children } = valueProps;
return <div className="Select-value">{children}</div>;
}}
{...other}
/>
);
}
}
class AutoCompleteComponent extends Component {
state = {
value: null,
};
handleChange = value => {
this.setState({ value: value })
const foundSuggestion = this.props.suggestions.find((s) => s.id === value);
if (this.props.creatable) {
this.props.onChange(foundSuggestion || {
[this.props.labelPropName]: value
})
} else {
this.props.onChange(foundSuggestion)
}
}
onChange = value => {
this.props.onChange(this.props.suggestions.find((s) => s.id === value))
};
render() {
const { classes, labelPropName, creatable } = this.props;
const suggestions = this.props.suggestions.map(suggestion => ({
value: suggestion.id,
label: this.props.labelFunction(suggestion)
}))
return (
<div className={classNames(classes.root,this.props.className)}>
<Input
fullWidth
inputComponent={creatable ? SelectCreatable : SelectWrapped}
value={this.state.value}
onChange={(value) => this.props.showValue ? this.handleChange(value) : this.onChange(value)}
placeholder={this.props.placeholder}
classes={{
input: classes.input,
...this.props.InputClasses
}}
inputProps={{
classes,
simpleValue: true,
options: suggestions
}}
/>
</div>
);
}
}
export default withStyles(styles, { withTheme: true })(AutoCompleteComponent);
的数字，并将其用于每种条形颜色。
我在网上搜索了许多示例，但没有运气，这是我的第一篇帖子，因此请原谅任何上传错误。任何帮助都将不胜感激。谢谢。
ColorID这是下面的代码：
col1 | col2 | col3 | col4 | col5 | ColorID
-----+------+------+------+------+--------
| | | | | 0
| | | | | 1
| | | | | 2
| | | | | 0
| | | | | 0
| | | | | 0
答案 0 :(得分：0)
我可以使用下面显示的另一种方法来解决这个问题。
Dim array As String()
Dim labelsList As List(Of String) = New List(Of String)
For Each row As DataRow In ds.Rows
labelsList.Add(row.Item("ColorID"))
Next
aar = labelsList.ToArray()
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
If aar(0) = "0" Then
Chart1.Series(0).Points(0).Color = Drawing.Color.Red
ElseIf aar(0) = "1" Then
Chart1.Series(0).Points(0).Color = Drawing.Color.Yellow
ElseIf aar(0) = "2" Then
Chart1.Series(0).Points(0).Color = Drawing.Color.Green
End If