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Solved
Sorting A Gridview With An XML File As Its Datasource
Posted on 2008-10-22
I want to programatically sort my Gridview upon page load. The datasource is an XML file with the 50 US States, but they are not in alphabetical order in the XML file. I want my Gridview to sort alphabetically by statename upon page load (I don't need the user to be able to sort manually), but I am getting the following error:
"Cannot find column name."
I checked this article http://www.experts-exchange.com/Programming/Languages/.NET/ASP.NET/Q_22892423.html but they never actually explain how to do this without having to write an XSL file.
Here is my VB:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Page.IsPostBack = False Then
BindGrid()
End If
End Sub
Sub BindGrid()
Dim ds As New DataSet
ds.ReadXml(Request.Physica
Dim dv As DataView = ds.Tables(0).DefaultView
dv.Sort = "name"
GridView1.DataSource = dv
GridView1.DataMember = "state"
GridView1.DataBind()
End Sub
And here is the XML:
"Cannot find column name."
I checked this article http://www.experts-exchange.com/Programming/Languages/.NET/ASP.NET/Q_22892423.html but they never actually explain how to do this without having to write an XSL file.
Here is my VB:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Page.IsPostBack = False Then
BindGrid()
End If
End Sub
Sub BindGrid()
Dim ds As New DataSet
ds.ReadXml(Request.Physica
Dim dv As DataView = ds.Tables(0).DefaultView
dv.Sort = "name"
GridView1.DataSource = dv
GridView1.DataMember = "state"
GridView1.DataBind()
End Sub
And here is the XML:
<?xml version="1.0" standalone="yes"?>
<usa_fix>
<config>
<color_map>0x7798BA</color_map>
<color_map_over>0x366CA3</color_map_over>
<quantity>51</quantity>
<background_color>0xE5EBF4</background_color>
<show_links>0</show_links>
</config>
<map_data>
<state>
<id>1</id>
<name>Washington</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>2</id>
<name>Idaho</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>3</id>
<name>Montana</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>4</id>
<name>North Dakota</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>5</id>
<name>Minnesota</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>6</id>
<name>Wisconsin</name>
<link>javascript:set_text('<P>Total Equity Placed - $4,665,667</P>
<P>Total Units Completed - 95</P>
<P><IMG height=75 alt="Blue Ribbon Lofts.JPG" src="/MapEditor/images/Blue%20Ribbon%20Lofts.JPG" width=100 border=0></P>
<P>&nbsp;</P>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>7</id>
<name>Michigan</name>
<link>javascript:set_text('<p>Total Equity Placed - $70,458,641</p>
<p>Total Units Completed - 1,885</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>8</id>
<name>Oregon</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>9</id>
<name>Wyoming</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>10</id>
<name>South Dakota</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>11</id>
<name>Iowa</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>12</id>
<name>Illinois</name>
<link>javascript:set_text('<p>Total Equity Placed - $46,047,570</p>
<p>Total Units Completed - 1,710</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>13</id>
<name>Indiana</name>
<link>javascript:set_text('<P>Total Equity Placed - $128,936,936</P>
<P>Total Units Completed - 3,630</P>
<P><IMG style="WIDTH: 100px; HEIGHT: 84px" height=768 alt="Connie Jean Garrett.jpg" src="/MapEditor/images/Connie%20Jean%20Garrett.jpg" width=1024 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Christamore ct Indy.JPG" src="/MapEditor/images/Christamore%20ct%20Indy.JPG" width=100 border=0></P>
<P><IMG height=75 alt="Arbors at princeton park columbus.JPG" src="/MapEditor/images/Arbors%20at%20princeton%20park%20columbus.JPG" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Connie Jean II Garrett IN.jpg" src="/MapEditor/images/Connie%20Jean%20II%20Garrett%20IN.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp; </P>
<P><IMG height=75 alt="Betz sr villas auburn.jpg" src="/MapEditor/images/Betz%20sr%20villas%20auburn.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Constitution Gardens INdy.JPG" src="/MapEditor/images/Constitution%20Gardens%20INdy.JPG" width=100 border=0></P>
<P><IMG height=75 alt="Brooklyn Manor fort wayne.jpg" src="/MapEditor/images/Brooklyn%20Manor%20fort%20wayne.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Eastland 112807 014.JPG" src="/MapEditor/images/Eastland%20112807%20014.JPG" width=100 border=0></P>
<P><IMG height=75 alt="chestnut hills fort wayne.JPG" src="/MapEditor/images/chestnut%20hills%20fort%20wayne.JPG" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Hauenstein Hills II.JPG" src="/MapEditor/images/Hauenstein%20Hills%20II.JPG" width=100 border=0></P>
<P><IMG height=75 alt="Heron Preserve II.JPG" src="/MapEditor/images/Heron%20Preserve%20II.JPG" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Heron Preserve Warsaw.jpg" src="/MapEditor/images/Heron%20Preserve%20Warsaw.jpg" width=100 border=0></P>
<P><IMG height=75 alt="Jerry Junction Grand Opening 002.jpg" src="/MapEditor/images/Jerry%20Junction%20Grand%20Opening%20002.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt=Maysville.JPG src="/MapEditor/images/Maysville.JPG" width=100 border=0></P>
<P><IMG height=75 alt="Pine Glen Indy.jpg" src="/MapEditor/images/Pine%20Glen%20Indy.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Prairie Apt South Bend.JPG" src="/MapEditor/images/Prairie%20Apt%20South%20Bend.JPG" width=100 border=0></P>
<P><IMG height=75 alt="preserve at fir road mishawaka.JPG" src="/MapEditor/images/preserve%20at%20fir%20road%20mishawaka.JPG" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Sacred Heart.bmp" src="/MapEditor/images/Sacred%20Heart.bmp" width=100 border=0></P>
<P><IMG height=75 alt="Stellhorn Fort Wayne.jpg" src="/MapEditor/images/Stellhorn%20Fort%20Wayne.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Stephanie Villas Fort Wayne.JPG" src="/MapEditor/images/Stephanie%20Villas%20Fort%20Wayne.JPG" width=100 border=0></P>
<P><IMG height=75 alt="Tilwater Pt fort wayne.jpg" src="/MapEditor/images/Tilwater%20Pt%20fort%20wayne.jpg" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Trail Ridge Columbia City IN.JPG" src="/MapEditor/images/Trail%20Ridge%20Columbia%20City%20IN.JPG" width=100 border=0></P>
<P><IMG height=75 alt="Turtle Creek indy.JPG" src="/MapEditor/images/Turtle%20Creek%20indy.JPG" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="Valley Forge Indy.jpg" src="/MapEditor/images/Valley%20Forge%20Indy.jpg" width=100 border=0></P>
<P><IMG height=75 alt="tyler terrace fort wayne.JPG" src="/MapEditor/images/tyler%20terrace%20fort%20wayne.JPG" width=100 border=0>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG height=75 alt="village corydon.JPG" src="/MapEditor/images/village%20corydon.JPG" width=100 border=0></P>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>14</id>
<name>Ohio</name>
<link>javascript:set_text('<p>Total Equity Placed - $71,814,273</p>
<p>Total Units Completed - 2,543</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>15</id>
<name>California</name>
<link>javascript:set_text('<p>Total Equity Placed - $10,263,396</p>
<p>Total Units Completed - 112<br />
&nbsp;</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>16</id>
<name>Nevada</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>17</id>
<name>Utah</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>18</id>
<name>Colorado</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>19</id>
<name>Nebraska</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>20</id>
<name>Kansas</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>21</id>
<name>Missouri</name>
<link>javascript:set_text('<p>Total Equity Placed - $4,868,373</p>
<p>Total Units Completed - 162</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>22</id>
<name>Kentucky</name>
<link>javascript:set_text('<p>Total Equity Placed - $9,871,416</p>
<p>Total Units Completed - 276</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>23</id>
<name>Arizona</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>24</id>
<name>New Mexico</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>25</id>
<name>Texas</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>26</id>
<name>Oklahoma</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>27</id>
<name>Arkansas</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>28</id>
<name>Louisiana</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>29</id>
<name>Mississippi</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>30</id>
<name>Tennessee</name>
<link>javascript:set_text('<p>Total Equity Placed - $6,971,751</p>
<p>Total Units Completed&nbsp;- 192</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>31</id>
<name>Alabama</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>32</id>
<name>Georgia</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>33</id>
<name>Florida</name>
<link>javascript:set_text('<p>Total Equity Placed - $20,458,271</p>
<p>Total Units Completed - 203</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>34</id>
<name>West Virginia</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>35</id>
<name>Maryland</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>36</id>
<name>Pennsylvania</name>
<link>javascript:set_text('<p>Total Equity Placed - $11,757,598</p>
<p>Total Units Completed - 147</p>');</link>
<info />
<color_map>0x244061</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>37</id>
<name>New York</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>38</id>
<name>Vermont</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>39</id>
<name>New Hampshire</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>40</id>
<name>Maine</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>41</id>
<name>Massachusetts</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>42</id>
<name>Rhode Island</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>43</id>
<name>Connecticut</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>44</id>
<name>New Jersey</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>45</id>
<name>Delaware</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>46</id>
<name>Virginia</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>47</id>
<name>North Carolina</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>48</id>
<name>South Carolina</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>49</id>
<name>Alaska</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>50</id>
<name>Hawaii</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>51</id>
<name>District of Columbia</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
<state>
<id>52</id>
<name>Puerto Rico</name>
<link>javascript:set_text('');</link>
<info />
<color_map>0x366092</color_map>
<color_map_over>0x95B3D7</color_map_over>
<color_map_active>0xF26522</color_map_active>
</state>
</map_data>
</usa_fix>
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4 Comments
Active 7 days ago
Have you examined the structure that is inferred from the DataSet.ReadXml call? Sometimes it infers a structure that you didn't expect. You can loop through the DataSet's Tables collection, and print out each table name and each column name for the tables.
For anyone else who comes across this same problem, using the advice of TheLearnedOne, I found out what I was doing wrong.
The structure of my XML document required me to change this line of code:
Dim dv As DataView = ds.Tables(0).DefaultView
To this:
Dim dv As DataView = ds.Tables(2).DefaultView
I had to load the right node of the XML document - I was just loading the whole thing when I really wanted the <state> node.
The structure of my XML document required me to change this line of code:
Dim dv As DataView = ds.Tables(0).DefaultView
To this:
Dim dv As DataView = ds.Tables(2).DefaultView
I had to load the right node of the XML document - I was just loading the whole thing when I really wanted the <state> node.
Active 7 days ago
I see where you use the ordinal index for the table, but I feel that you should use the table instead:
Example:
Dim dv As DataView = ds.Tables("map_data")
That would be more readable.
Example:
Dim dv As DataView = ds.Tables("map_data")
That would be more readable.
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