Use C # To draw a chart (pie chart line chart ),

Use C # To draw a chart (pie chart line chart ),

Public PlaceHolder PlaceHolder1; // controls for displaying images

The category names of each image are as follows:

PictureType Graphic Type 5 chChartTypeBarClustered clustered bar chart 0 NULL

PictureType Graphic Type 7 chChartTypeBarClustered3D 3D clustered bar chart 0 NULL

PictureType Graphic Type 6 chChartTypeBarStacked Stacked bar chart 0 NULL

PictureType Graphic Type 8 chChartTypeBarStacked3D Stacked bar chart 0 NULL

PictureType Graphic Type 1 chChartTypeColumnClustered clustered column type 0 NULL

PictureType Graphic Type 3 chChartTypeColumnClustered3D 3D clustered column type 0 NULL

PictureType Graphic Type 2 chChartTypeColumnStacked Stacked column Chart 1 NULL

PictureType Graphic Type 4 chChartTypeColumnStacked3D Stacked column limit 0 NULL

PictureType Graphic Type 13 chChartTypeLine line chart 0 NULL

PictureType graph type 15 chChartTypeLineMarkers data point line chart 0 NULL

PictureType Graphic Type 14 chChartTypeLineStacked stacked line chart 0 NULL

PictureType Graphic Type 16 chChartTypeLineStackedMarkers stacked data point line chart 0 NULL

PictureType Graphic Type 17 chChartTypePie pie chart 1 NULL

PictureType Graphic Type 19 chChartTypePie3D 3D pie chart 0 NULL

PictureType graphic type 18 chChartTypePieExploded separated pie chart 0 NULL

PictureType Graphic Type 20 chChartTypePieExploded3D separated 3D pie chart 0 NULL

PictureType Graphic Type 9 chChartTypeSmoothLine smoothing line chart 0 NULL

PictureType Graphic Type 10 chChartTypeSmoothLineMarkers data point smoothing line chart 0 NULL

PictureType Graphic Type 11 chChartTypeSmoothLineStacked stacked smoothing line chart 0 NULL

PictureType Graphic Type 12 chChartTypeSmoothLineStackedMarkers stacked Data Smoothing Line chart 0 NULL

The image retrieval method is as follows:

/// </Summary> /// <param name = "dbDtViewWrk"> transmitted data </param> /// <param name = "strAbsolutePath"> absolute path </ param> /// <param name = "strRelativePath"> relative path </param> /// <param name = "ChartType"> Format of the graph to be drawn (pie chart or line chart)) </param> // <param name = "strTitle"> statistical name </param> public void PaintToImage (DataTable dbDtViewWrk, string strAbsolutePath, string strRelativePath, character ChartType, string strTitle) {string strS EriesName = "legend"; // stores the project string [] ItemsName = new string [dbDtViewWrk. rows. count]; // string [] ItemsCount = new string [dbDtViewWrk. rows. count]; // The unit of scale int iUnit = 1; // The maximum value int iMaxValue = 0; string strXdata = String. empty; string strYdata = String. empty; // assign a value to the array for (int I = 0; I <dbDtViewWrk. rows. count; I ++) {ItemsName [I] = dbDtViewWrk. rows [I] [0]. toString (); // field name to be counted ItemsCount [I] = dbDtVi EwWrk. rows [I] [5]. toString (); // field data to be calculated} // specify a specific string for the X axis to display data // String strXdata = string. empty; foreach (string strData in ItemsName) {strXdata + = strData + "\ t" ;}// string strYdata = String. empty; // specify a specific string for the Y axis to correspond to the X axis in foreach (string strValue in ItemsCount) {strYdata + = strValue + "\ t"; if (int. parse (strValue)> iMaxValue) {iMaxValue = int. parse (strValue) ;}}if (iMaxValue> 20) {iUnit = IMaxValue/10;} // create a ChartSpace object to place the chart ChartSpace laySpace = new ChartSpaceClass (); // Add the chart ChChart InsertChart = laySpace to the ChartSpace object. charts. add (0); // base color InsertChart. plotArea. interior. color = "white"; // specify the chart type. You can use OWC. chartChartTypeEnum enumeration is worth accessing InsertChart. type = ChartType; // column chart // specifies whether the legend is required to indicate InsertChart. hasLegend = true; InsertChart. barWidth = 0; InsertChart. legend. position = ChartLegendPositionEnum. chLegendPositionBottom; InsertChart. hasTitle = true; // Add the title InsertChart for the chart. title. caption = strTitle; // The title name. // if (ChartType. toString (). indexOf ("ChartTypePie") =-1) {InsertChart. axes [0]. font. size = 11; // the X axis of InsertChart. axes [1]. font. size = 11; // y axis InsertChart. legend. font. size = 11; InsertChart. axes [0]. hasTitle = true; InsertChart. axes [0]. title. caption = ""; // InsertChart of the month. axes [1]. hasTitle = true; // InsertChart. axes [1]. scaling. splitMinimum = 200; InsertChart. axes [1]. title. caption = "quantity"; InsertChart. axes [1]. majorUnit = iUnit; // set the scale unit to InsertChart. axes [1]. scaling. minimum = 0; // min scale = 0} // Add Add a series InsertChart. seriesCollection. add (0); // specifies the name of the series, InsertChart. seriesCollection [0]. setData (ChartDimensionsEnum. chDimSeriesNames, + (int) chartspecialperformancesenum. chDataLiteral, strSeriesName); // you can specify strXdata = strXdata. substring (0, strXdata. length-1); InsertChart. seriesCollection [0]. setData (ChartDimensionsEnum. chDimCategories, + (int) chartspecialperformancesenum. chDataLiteral, strX Data); // specify strYdata = strYdata. substring (0, strYdata. length-1); InsertChart. seriesCollection [0]. setData (ChartDimensionsEnum. chDimValues, (int) chartspecialperformancesenum. chDataLiteral, strYdata); // Add the label ChDataLabels dls = InsertChart. seriesCollection [0]. dataLabelsCollection. add (); if (ChartType. toString (). indexOf ("ChartTypePie ")! =-1) {dls. position = ChartDataLabelPositionEnum. chLabelPositionCenter; dls. hasPercentage = false; // dls. hasValue = false; dls. hasCategoryName = false; // specifies whether the legend of the chart needs to be labeled as InsertChart. hasLegend = true; InsertChart. legend. position = ChartLegendPositionEnum. chLegendPositionBottom;} // output file. int iImageLength = 0; int iImageWidth = 0; // get the settings from the Config file // iImageLength = int. parse (WebConfigurationManager. appSettings ["ShowImageLength"]); // iImageWidth = int. parse (WebConfigurationManager. appSettings ["ShowImageWidth"]); iImageLength = 450; iImageWidth = 300; string strImageName = ChartType. toString () + "_" + Guid. newGuid (). toString ("N") + ". png "; laySpace. exportPicture (strAbsolutePath + strImageName, "PNG", 450,300); // Add the image to placeholder, the string strImageTag = "
 

C language ^ how to use
A1 = 0x01; // 0000 0001
A2 = 0x00; // 0000 0000
A3 = 0x03; // 0000 0011
A4 = 0x02; // 0000 0010

B1 = a1 ^ a2; // 0000 0001
B2 = a1 ^ a3; // 0000 0010
B3 = a1 ^ a4; // 0000 0011

^ XOR operator. The bitwise value is 0 and the difference is 1. See the example above.

//
Examples of simple and practical problems:
====================================
======= A ======= B =========
There are two circuits on the top. The two switches are a and B respectively. The opening status is \ [1], and the closing status is/[0].
If both circuits are enabled or disabled.
If a turns on [1], B turns off [0], and circuit 1 Powers on
=====================
If a disables [0], B enables [1], and circuit 2 powers on.
====================================
In summary, the circuit fails in the and B states simultaneously [0]. When a and B are different, the power is charged [1].

How to judge prime numbers using C language
A prime number is a number that cannot be divisible by any integer except 1 and itself. For example, 17 is a prime number because it cannot be 2 ~ Any integer in 16. Therefore, to determine whether an integer m is a prime number, you only need to set m to 2 ~ M-1 no integer can be divisible, m is a prime number.
In addition, the judgment method can be simplified. M does not need to be 2 ~ Remove each integer between the numbers expressed as 1 and 2 ~ √ Remove each integer between m. If m cannot be 2 ~ √ Any integer across m, m must be a prime number. For example, to determine whether 17 is a prime number, you only need to enable 17 to be 2 ~ Since each integer between 4 cannot be divisible, 17 is a prime number. (Cause: If m can be 2 ~ If any integer is divisible between expressed on and off, one of the two factors must be less than or equal to √ m, and the other one must be greater than or equal to √ m. For example, 16 can be divided by 2, 4, 8, 16 = 2*8, 2 less than 4, 8 greater than 4, 16 = 4*4, 4 = √ 16, so only 2 ~ There is no factor between 4)
# Include <stdio. h>
# Include <math. h>
Void main ()
{
Int m, I, k;
Printf ("enter an integer :");
Scanf ("% d", & m );
K = (int) sqrt (m );
For (I = 2; I <= k; I ++)
If (m % I = 0)
Break;
If (I> k)
Printf ("% d is a prime number. \ N ", m );
Else
Printf ("% d is not a prime number. \ N ", m );
}