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(MFC) Demonstrate the XML I, J, and K Properties

Demonstrates the XML I, J, and K properties. These properties can be used in paths to access the I'th, J'th, or K'th child in a path. Three indexing properties are provided to allow for triple-nested loops using this feature.

Note: This example requires Chilkat v9.5.0.64 or later.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkXml.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // Note: This example requires Chilkat v9.5.0.64 or later.

    CkXml xml;

    xml.put_Tag("tripleNested");

    int i = 0;
    int j = 0;
    int k = 0;

    CkStringBuilder sbValue;
    bool bAutoCreate = true;

    while (i < 3) {
        xml.put_I(i);
        j = 0;
        while (j < 4) {
            xml.put_J(j);
            k = 0;
            while (k < 2) {
                xml.put_K(k);

                int n = i * 100 + j * 10 + k;
                sbValue.Clear();
                sbValue.AppendInt(n);

                xml.UpdateAt("a[i]|b[j]|c[k]",bAutoCreate,sbValue.getAsString());
                k = k + 1;
            }

            j = j + 1;
        }

        i = i + 1;
    }

    strOut.append(xml.getXml());
    strOut.append("\r\n");

    // This is the XML
    // See below for code showing how to parse it..

    // 	<?xml version="1.0" encoding="utf-8" ?>
    // 	<tripleNested>
    // 	    <a>
    // 	        <b>
    // 	            <c>0</c>
    // 	            <c>1</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>10</c>
    // 	            <c>11</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>20</c>
    // 	            <c>21</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>30</c>
    // 	            <c>31</c>
    // 	        </b>
    // 	    </a>
    // 	    <a>
    // 	        <b>
    // 	            <c>100</c>
    // 	            <c>101</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>110</c>
    // 	            <c>111</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>120</c>
    // 	            <c>121</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>130</c>
    // 	            <c>131</c>
    // 	        </b>
    // 	    </a>
    // 	    <a>
    // 	        <b>
    // 	            <c>200</c>
    // 	            <c>201</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>210</c>
    // 	            <c>211</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>220</c>
    // 	            <c>221</c>
    // 	        </b>
    // 	        <b>
    // 	            <c>230</c>
    // 	            <c>231</c>
    // 	        </b>
    // 	    </a>
    // 	</tripleNested>
    // 

    // Parse the XML, without needing to know the number of children.
    // That can be discovered with the NumChildrenAt method.

    i = 0;
    int aCount = xml.get_NumChildren();
    while (i < aCount) {
        xml.put_I(i);
        j = 0;
        int bCount = xml.NumChildrenAt("a[i]");
        while (j < bCount) {
            xml.put_J(j);
            k = 0;
            int cCount = xml.NumChildrenAt("a[i]|b[j]");
            while (k < cCount) {
                xml.put_K(k);
                strOut.appendInt(i);
                strOut.append(", ");
                strOut.appendInt(j);
                strOut.append(", ");
                strOut.appendInt(k);
                strOut.append(": ");
                strOut.appendInt(xml.GetChildIntValue("a[i]|b[j]|c[k]"));
                strOut.append("\r\n");
                k = k + 1;
            }

            j = j + 1;
        }

        i = i + 1;
    }

    // Output:

    // 	0, 0, 0: 0
    // 	0, 0, 1: 1
    // 	0, 1, 0: 10
    // 	0, 1, 1: 11
    // 	0, 2, 0: 20
    // 	0, 2, 1: 21
    // 	0, 3, 0: 30
    // 	0, 3, 1: 31
    // 	1, 0, 0: 100
    // 	1, 0, 1: 101
    // 	1, 1, 0: 110
    // 	1, 1, 1: 111
    // 	1, 2, 0: 120
    // 	1, 2, 1: 121
    // 	1, 3, 0: 130
    // 	1, 3, 1: 131
    // 	2, 0, 0: 200
    // 	2, 0, 1: 201
    // 	2, 1, 0: 210
    // 	2, 1, 1: 211
    // 	2, 2, 0: 220
    // 	2, 2, 1: 221
    // 	2, 3, 0: 230
    // 	2, 3, 1: 231
    // 


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

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