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.NET Forum / ASP.NET / DataGrid / October 2004Move Datagrid Row Up/Down
Hi, Anyone have suggestions for how to select a row in a web datagrid and either drag and drop it somewhere else in the grid or use up/down arrows to move the row to the desired location? Any feedback would be appreciated. Thanks, Michael Murphy mdmurphy@scs-techresources.com 954-452-1047 Similar question was discussed here recently. Google the usergroups for thread "client side sorting of datagrid items". Eliyahu > Hi, > Anyone have suggestions for how to select a row in a web datagrid and either [quoted text clipped - 5 lines] > mdmurphy@scs-techresources.com > 954-452-1047 Hi Michael, As Eliyahu mentioned, there're some former threads dicussing on such questions. Generaly, since the asp.net datagrid is a serverside databound template control which generate all the columns and rows via the datasource bind to it, so the normal way to change the datagrid row's order is to change the datasource bind to it. If you only want to change the datagrid's display rows at clientside, we need to use some clientside scripts( such as the DHTML behaviors ) mentioned in some other threads: http://groups.google.com/groups?hl=en&lr=&threadm=umFJl%239rEHA.3848%40TK2MS FTNGP14.phx.gbl&rnum=1&prev=/groups%3Fq%3D%2522client%2Bside%2Bsorting%2Bof% 2Bdatagrid%2Bitems%2522%26hl%3Den Also, here are some tech article links which demonstrate how to use clientside DTHML behavior to alert the HTML TABLE element or asp.net datagrid control at clientside via dhtml behaviors; http://msdn.microsoft.com/msdnmag/issues/04/01/CuttingEdge/default.aspx http://www.microsoft.com/mind/0499/HTMLbehaviors/HTMLbehaviors.asp Hope helps. Thanks. Regards, Steven Cheng Microsoft Online Support  SignatureGet Secure! www.microsoft.com/security (This posting is provided "AS IS", with no warranties, and confers no rights.) Steve, Let's say I have the following grid characteristics: Slot Name Other Info Details 1 Mike 38 Years LinkToDetailsRecord 2 Joe 41 Years LinkToDetailsRecord 3 Bob 23 Years LinkToDetailsRecord Now Slot is not in the detail records, it is basicall a sort column used by another process. What I want here, is for the administrator to be able to move Bob to slot 2 where joe is and then joe would be slot 3. In other words, select a row and be able to move it up one or down one,with the slot numbers staying the same. Hope this helps you understand what I need to do. Michael > Hi Michael, > [quoted text clipped - 31 lines] > (This posting is provided "AS IS", with no warranties, and confers no > rights.) Hi Michael, Thanks for your response and the further description. Based on your requirement, I think it is very complex to implement such task via clientside script(need very advanced javascript technique and time for debugging). Also, when the page is post back,the clientside changes may not reflect to the serverside datas. So my suggestion is when the datas (records) first retrieved from database, we maintain it in a local DataTable which stored in the page's viewstate or sessionstate. And when the Administrator want to move rows up or down, just locate that certain datarow in the stored datatable and adjust its position in the datatable (switch with another row in the table) and rebind the table with the datagrid again. But this need the page to postback to serverside whenever the admin need to do such changes on the grid. Please let me know if you have any other concerns. Thanks. Regards, Steven Cheng Microsoft Online Support SignatureGet Secure! www.microsoft.com/security (This posting is provided "AS IS", with no warranties, and confers no rights.) Hi Steve, Just to refresh your memory, this is what I put in the last posting: Let's say I have the following grid characteristics: Slot Name Other Info Details HiddenField 1 Mike 38 Years LinkToDetailRecord PrimaryKeyToDetailRecord 2 Joe 41 Years LinkToDetailRecord PrimaryKeyToDetailRecord 3 Bob 23 Years LinkToDetailRecord PrimaryKeyToDetailRecord Further Info. Slot is in the records for this dataset (tblAdsToRun)-just not in the detail records (tblAdvertisements). Slot is basically a column used by the display ad process. What I want here, is for the administrator to be able to move the Bob record to slot 2 where record Joe is and then record Joe would be slot 3. In other words, select a row and be able to move it up one or down one, with the slot numbers staying the same. Now I have tried something different things and different approaches.. In the GridUpdate event I allow the user to change the Slot and upon update I need to write the database record back to the tblAdsToRun table. For me to get to the right row, I need the PrimaryKey (a hidden field in the grid). For some reason, I cannot get that number from the grid. It just keeps showing up as blank (""). Do you think I have something else going on here, or is it a fact that if the field is visible=false then you cannot access the hidden data. I am sure I have done this before. Any suggestions? Thanks for your help! Michael Michael D. Murphy Senior Software Architect SCS Tech Resources, Inc. 1400 Northwest 70 Way, Suite HO1 Plantation, FL 33313-5330 mdmurphy@scs-techresources.com 954-452-1047 > Hi Michael, > [quoted text clipped - 22 lines] > (This posting is provided "AS IS", with no warranties, and confers no > rights.) Steve, After banging my head against the wall for two days, I figured that I need to change the edited field (Slot) to a template field and use the FindControl method to retrieve the value. At this point all is well with the way that I am doing it. Maybe it is not the best way, but it works. Thanks for your help. Michael Hi Steve, Just to refresh your memory, this is what I put in the last posting: Let's say I have the following grid characteristics: Slot Name Other Info Details HiddenField 1 Mike 38 Years LinkToDetailRecord PrimaryKeyToDetailRecord 2 Joe 41 Years LinkToDetailRecord PrimaryKeyToDetailRecord 3 Bob 23 Years LinkToDetailRecord PrimaryKeyToDetailRecord Further Info. Slot is in the records for this dataset (tblAdsToRun)-just not in the detail records (tblAdvertisements). Slot is basically a column used by the display ad process. What I want here, is for the administrator to be able to move the Bob record to slot 2 where record Joe is and then record Joe would be slot 3. In other words, select a row and be able to move it up one or down one, with the slot numbers staying the same. Now I have tried something different things and different approaches.. In the GridUpdate event I allow the user to change the Slot and upon update I need to write the database record back to the tblAdsToRun table. For me to get to the right row, I need the PrimaryKey (a hidden field in the grid). For some reason, I cannot get that number from the grid. It just keeps showing up as blank (""). Do you think I have something else going on here, or is it a fact that if the field is visible=false then you cannot access the hidden data. I am sure I have done this before. Any suggestions? Thanks for your help! Michael Michael D. Murphy Senior Software Architect SCS Tech Resources, Inc. 1400 Northwest 70 Way, Suite HO1 Plantation, FL 33313-5330 mdmurphy@scs-techresources.com 954-452-1047 "Steven Cheng[MSFT]" <v-schang@online.microsoft.com> wrote in message news:Sbt541yuEHA.2092@cpmsftngxa10.phx.gbl... > Hi Michael, > > Thanks for your response and the further description. Based on your > requirement, I think it is very complex to implement such task via > clientside script(need very advanced javascript technique and time for > debugging). Also, when the page is post back,the clientside changes may not > reflect to the serverside datas. So my suggestion is when the datas > (records) first retrieved from database, we maintain it in a local > DataTable which stored in the page's viewstate or sessionstate. And when > the Administrator want to move rows up or down, just locate that certain > datarow in the stored datatable and adjust its position in the datatable > (switch with another row in the table) and rebind the table with the > datagrid again. > But this need the page to postback to serverside whenever the admin need to > do such changes on the grid. > > Please let me know if you have any other concerns. Thanks. > > Regards, > > Steven Cheng > Microsoft Online Support > > Get Secure! www.microsoft.com/security > (This posting is provided "AS IS", with no warranties, and confers no > rights.) Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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